Have my u/s tomorrow

Wish me luck ladies! Have my second u/s tomorrow & I'll be 7.5 weeks. 2 previous m/c's . Just took my first pill tonight for my thyroid to balance out my levels, (acts up during pregnancy, possible reason for last 2 m/c) as my tsh levels are low. Hoping it's not too late & baby is going to be my sticky bean!!! Xoxo