IVF question: Can I have dislodged the embryo during 2ww?

[slpfsr]

I am really scared that I may have done something to harm the embryo(s). Can you please tell me what you think??
--I have been on my first IVF cycle, and doing everything meticulously.
--I had mild to moderate OHSS after ER (14 eggs, 10 fertilized with ICSI), and basically just stayed home recovering.
--After ET (two 5-day blasties transferred), I also took it very easy, mainly just staying home, resting, and doing some computer work only.
--At CD27, 13 dp ER, I was feeling well, and went with some friends and my husband to a mall to do some shopping. On the way there, I was feeling unconfortable in the car, with some bloating and mild back pain. It felt like a touch of OHSS returning, which in a way reassured me, because I was told that if I did get pregnant, the OHSS might come back. While at the mall, I took it easy, but did walk around more than I had all month, and tried on a few things. At one point, I started to feel much worse and I had to sit down. I waited for my friends, but we couldn't immediately go home as we weren't close by. We had to go to another place (I wasn't confortable explaining to them why I would prefer going home), where I walked a bit more, but then again sat it out when I got unconfortable.
--When I got home, I immediately went to lie down, and took it easy for the rest of the evening. I did take a HPT before bed, because I was convinced that if it was OHSS, then I must be pregnant, and I did get a line, though quite faint.
--The next day was my BETA (CD28, 14 days after ER, and 9 after ET). I told the nurses about my experience the day before, and they did an ultrasound to check on the OHSS, and said that I only had a mildly swollen right ovary, but it wasn't really OHSS.
--When they called me later with the BETA results, HCG was only at 10, which I understand is very very low. I know there is still a mild possibility, and that what is important is to see the number double, but I am really freaked out.
--I felt much better that day (yesterday), but this saddened me because I am thinking that I was pregnant, which is why I was getting the OHSS symptoms, but that the sudden "exercise" at the mall somehow made me miscarry, which made the HCG drop by the BETA test the next day.
--Is that possible? Is it my fault? How else can you explain the symptoms at the mall?

I am really psyching myself out, and I would appreciate any reassurance that if the embryo(s) were implanting well, they would not dislodge easily. I am going back for another test tomorrow to see if the number doubled, and in the meantime I was told to continue progesterone shots, but everyone was very cautious not to give me too much hope, and I am feeling super guilty that I caused everything to go wrong at the last minute, and after so much effort...

Thank you very much in advance for your reply.

SL

[slpfsr]

Thanks pol79. I just wished i had stayed home. The outcome might have been the same, but at least I wouldn't be beating myself up about it...

[pol79princess]

No, there is absolutely nothing you could have done to "dislodge" the embryo, so don't even think that way! IVF put you through quite a concoction of drugs and that is probably causing some side effects. I had 30 eggs retrieved and my ovaries were still swollen 3 months after my ER! There really is nothing that you could do now but let the embryo do its thing :) I wish you best of luck and keeping my fingers crossed!