Hi - I had the exact same thing happen. Got PG with #1 on my first try at 32, now have been TTC #2 at 35 for nearly a year. I did testing with my OB and then she referred me to an RE immediately. She did two things - blood work to look at key hormones like estrogen, FSH, LH, Progesterone, etc. Then she did a sonogram to look at my ovaries and make sure she didn't see any cysts, abnormalities, etc.
Some advice to save yourself time:
- since you're having blood drawn anyway, ask if they can do AMH as well since mine didn't do it and then I had to go back again later on
- try to go on CD3 of your cycle if you can, if not, you will likely go back again on that day depending on what the tests uncover
- regardless of the results, push to see an RE (especially since you have endo) because the reality is that OBs just don't know much about infertility and I wasted time that I could have been seeing an RE who was actually able to prescribe treatment. My numbers came back borderline with my OB, so she said to keep trying. Fast forward a few months when I finally saw an RE and the tests revealed my FSH was much higher and AMH was practically non-existant.
Your OB will not do an HSG - and in fact my RE hasn't recommended one since I had a child already so he presumes my tubes are open. But, that could be different with endo.
- regardless of your results