The best way to understand your TSH numbers in regards to your pregnancy is to talk with your doctor. I found that my doctors office was very responsive to questions between appointments. As I'm sure you know, it's important to have regular check ups for T4/TSH blood levels frequently to make sure you are taking the correct medication dose.
Egg quality is affected by your age. In 20s and early 30s, you should have a large number of good quality eggs - you will have a few inferior quality eggs, but the good should outweigh the bad.
Please check back in after your 14 week appointment - and congrats on your pregnancy!
I'm sorry you are facing so much stress this early. It's impossible to diagnose what is happening with individuals - I urge you to check with your doctor and get a 2nd opinion if you need more information.
Please do ask your doctor what to expect moving forward!
The best thing I did was take a friend with toddlers to register and shop for baby stuff. She knew exactly what I would need (diapers, diapers, diapers) and what I would not (anything article of clothing that is white).
I was very active during my pregnancy - yoga (not the sit and chant yoga - tough stuff) and lots of walking and stretching.
As long as you have checked in with your doctor, you should be fine! And I bet your labor will be a breeze.
Here is an article about exercise and pregnancy that you might want to share with your family. There is also a list of certain exercises you should avoid during pregnancy but I'm sure you're already aware of those! Exercise During Pregnancy