Everytime i get pregnant its chemical

I need help. Im 35 been ttc over a year. I have a 13 year old and an 8 year old. I have been through things that are crazy and some choices i made are poor. I want a child so bad with my fiancee and we were given this opportunity twice before and i fucked up pardon my cussing. At the time i took my fertilty for granted and i pray that God will forgive me and please give me another chance. I'm changing. In 2013 i had a miscarriage. 2014 we were broken up and i wasn't trying to get pregnant. And January 1, 2015 we started dating again. I didn't get pregnant until August and it was chemical lost at 5 weeks and i just had another chemical lost at 5 weeks. I think my hormones are fucked up. My doctor thinks i might have hyperthyroidism but i don't know yet or im thinking it could be progesterone. 2013 was the worst year of my life and i started not eating right . I am thinner than i want to be. I went to 2 different gyns and asked for progesterone. They said no and one referred me to fertility specialist and i cant because medicaid don't cover it and i don't have that kind of money. I don't understand why the doctor wouldn't try progesterone first. I feel racially and ecomically discrinated like the doctor was just trying to get rid of me because medicaid don't want me to get pregnant. If i could buy or steal progesterone i would. Im also thinking of trying B6 vitamins. I am asking for prayer and maybe advice as to why i may be going through this. A psychic said i would become pregnant next year. But i just was pregnant ! I hope it means pregnant that ends with a live healthy baby . Also my pms has gotten worse to where i have PMDD and i get nausea sometimes with pms and i think im pregnant but get my period. They are pretty regular usually start 2 days after glow says it will but my cycle is a little longer than last year which was 22 days now im 26 days. I freak out at the thought of perimenopause. Im only 35 and im not done having kids! Maybe i read too much on the internet. My grandmom was done menopause at 50 i dont have a relationship with my mom. Idk i would stop ttc for a while and delete the aps and just see what happens but i feel i am running out of time. Do u guys think it may be low progesterone? These doctors dont tell me shit because of my medicaid so i turn to the internet. Please give me some insight and prayer