Hi. Welcome to our community!
Like LivingInHope, the first thing I'm going to do is show you our archived conversations on pregnancy from here in the dysautonomia forum:
http://www.medhelp.org/forums/search/266?utf8=%26%23x2713%3B&query=pregnancy
As you can see, it's something that is brought up routinely, and our conversations about it have evolved over time as more research has come to our attention and members have come and gone who have had personal experience to share. I will caution you to look at the dates on the threads you read in the archive, and be aware that most of those are old "dead" threads which are essentially past their expiration date. I would advise you not to reply on any discussion older than 6 months, as the people involved may no longer be active or the information they shared about themselves may no longer be current/accurate. Rather, if you see someone you want to reach out to because of a comment they made, you have the option of clicking on their username and sending them a private message.
I will contact my co-community leader who has experience with this and ask her to stop and chime in on this thread if she's well enough. I'm pre-planning a pregnancy myself at the moment, so for right now I can at least tell you what my specialists are advising me in this phase. (I have had dysautonomia for 6+ years now.) In terms of pre-planning, my biggest focus is on tapering off medications that are not safe for a fetus; I don't know if you take any meds for your dysautonomia or any related conditions (gastroparesis, MCAD, Sjogren's, EDS, etc.), but of course it's critical to consult with your OB/GYN and the docs who prescribe your meds about what is safe during pregnancy (and breastfeeding if you're going to do that) and how to safely taper off anything you need to stop taking.
Another consideration for me, which I don't know how much this may be an issue for you, was looking at my diet. I have severe gastroparesis and dysmotility, and there's some question of a possible metabolic disorder; it is critical that I eat properly to get the right nutrients for the fetus considering my GI issues. In addition, I've been a pescetarian since age 9 (a vegetarian that eats fish but no other meat); because of my metabolic issues and high protein demands, I've opted to eat meat during my pregnancy for the health of my child. I also have been instructed by my dietician about which types of fish are safe to eat. There are some fish that are too high in mercury to be safe to eat during pregnancy:
http://www.*****************.org/pregnancyhealth/fishmercury.htm
On the other hand, there is research that says children of women who ate fish during pregnancy have higher IQs so I don't intend to avoid it altogether by any means.
http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(07)60277-3/abstract
To battle my dysautonomia symptoms in the absence of my dysautonomia meds, my autonomic neurologist at Cleveland Clinic advised me to get back to the basics. As I'm tapering off meds, I'm focusing more and more on what I can control on the outside: compression stockings, salt loading, fluid loading, countermaneuvers, keeping up with exercise that I can tolerate, and using my DME "helps." The durable medical equipment I use at this point is pretty extensive, from a rollator walker and prescription helmet to a power wheelchar, from a shower chair and grab bars to a grab bar attached to the bed; next due for delivery is a new shower chair with tilt and recline to avoid fainting in the shower. About compression stockings: if you prefer waist-high over thigh-highs, they make ones specifically for pregnant women so get a new prescription so you're not squeezing your belly. Even with the thigh-highs, your measurements may change during pregnancy so it might be worth going back to the fitter to get a full set of measurements (what they do for a pair of custom compression hose) to see if you're in the wrong size and need a new Rx; I can personally attest to the wonders of a custom-fitted pair.
I've been told that I'll be meeting with both high-risk obstetrics and the high-risk anesthesiology people once I'm pregnant so that we have a full team on board and a plan in place (even though my fiance and I ... well, husband by then, LOL ... have chosen to have my normal OB/GYN deliver the baby unless there are extenuating circumstances). Those are things you may want to consider, depending on how involved your dysautonomia is and how you feel about your pregnancy and delivery.
I'm currently seeing genetics for testing on myself and I did ask if I should go to the pre-pregnancy genetics counseling clinic at my hospital. The advice I've been given at this point is that unless advised otherwise per results of my genetic testing, there is really no point to seeing them now. It's something you might want to think about or talk to your doctor about, more so if you have any genetic diagnoses. (It's hard to know what's relevant to you not knowing the cause of your dysautonomia.)
If you have other specific questions, I'll be happy to try to answer them. Best,
Heiferly.