PCOS but underweight?

Sammy

So I’m 21 just got diagnosed with PCOS after an ultrasound (showed polycystic ovaries) but I have regular periods and am underweight. Can this change if I put on weight or will I get new symptoms? I’m also a lesbian so I think the high testosterone caused my lesbianism? Been that way before puberty and was always a tomboy. I’m not too familiar with PCOS but I also didn’t take a hormone test but I’m sure I do have higher testosterone than normal (have acne beyond puberty) didn’t think it was due to PCOS tho thought it was normal to get before every period. Also I can put on muscle easily and even have more muscle even without exercise but I have a low sex drive even tho I think about sex a lot.