Only an u/s can give you the answer. I bled from 6 weeks till about 16 weeks on and off during my pregnancy and delivered a healthy baby girl. Bleeding in the first trimester is very common.
The fact that you had 2 kids before without complications is a good sign! Many ladies here had successful pregnancies after 45 although your ob may monitor you more closely this time around. For example, my ob would not let a woman after 40 go beynd 40 weeks. There are graeter risks of placenta failure, etc. These risks are still small though.
Downs is a genetic abnormality and genetic code is already fixed before you start taking progesterone. I took progesterone with both of my pregnancies and had no side-effects.
Congrats on your pregnancy!
It's just an u/s where they measure the thickness of nuchal fold and do some other measurements and look for other markers (e.g. the presence of the nasal bone). It's a non-invasive test and lets you see your baby. I absolutely LOVED all my first-look ultrasounds with perinatologust. They also have really cool and advanced u/s equipment. Enjoy!!...
My ob typically does the first u/s at 7 weeks and then another check around 10 weeks. Nuber of u/s and ob appts you get may also depend on your health insurance. Some Kaiser enrollees only get 1 u/s at 15 weeks for example.
If you have to chase your ob I would find another one. Vote with your feet!
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