Help!!!!

So my fiancé and I have been together 5 years off and on (and what I mean is) We started talking in September of 2013 I got pregnant with our first child (I had two miscarriages before hand with a different guy) anyways and had him in August of 2014. After he was born I went on the depo in June of 2105 and got off in June of 2016 bc we decided we wanted another child, I have gotten pregnant once in July of 2016 and then again in August of 2017 but miscarried both of them. I have been on clomid since July of 2016 when I miscarried. Thing is, is that we have been trying for 3 years but either miscarry or get negative tests. I don’t know what to do anymore I’m loosing hope and the bad thing is, is that I want a little girl soo bad and I don’t know how to make this work. I know it’s not him bc he can get me pregnant it’s just I’m having a hard time carrying it bc I was diagnosed with polycystic ovarian syndrome and they Obgyn’s told me that my uterine line is thin but they can’t do nothing about my uterine line until I get pregnant. So my question to all mommy’s out there is there any advice or anything at all anyone can tell me to help get me pregnant long enough to get to the Obgyn for the stuff they can do? Bc I’m literally about to just fall apart into a huge glob on the floor. I’m so tired of seeing negatives and being broken over this!