180 pounds is that over weight

I'm finding it hard to convince I'm 180 pounds 5"2 feet but other then that I have regular periods and over all healthy my so has underactive thyroid takes pre work out and vitimons but he goes to the gym and is healthy, 
(He's on meds for his UT)
We have sex regularly and I don't know what to do I think he has low sperm count and when he spoke to the doctors they said he would be okay? 😅
I think he has a low sperm count because I can't get pregnant
Any advice IDK what to do xx

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