Chance of conception after trying for 6 months is just 70%, it might not be enough for you. So you can continue trying.
For borderline thyroid
, 50mcg Eltroxine dose might be little excess. So you can recheck your TSH level
& adjust dose accordingly.
There is no harm in doing HSG
, which will tell the status of your tubes.
All the medicines you are taking are fine. You can continue them & continue trying for pregnancy