Premature ovarian failure/early menopause

So here goes

I have always had period issues from 11 years old, as in heavy irregular always bleeding. I was always on the pill, I would bleed for 2 weeks every 2 weeks. No type of contraceptive worked for me. Anyway fast forward at 21 i fell pregnant on the pill, over the moon i couldn't have been happier, i now have my amazing 6 year old son. After my son i had 3 miscarriages 2 were with his Dad the other was another partner.
Now i have been with my now Fiance for 3 years,
both always talked from the beginning about having babies, he is Dad to my son and an amazing one he is. Now we have said we will try for a baby end of this year. I finally had regular periods, so i was tracking my cycle to be prepared as he works FIFO.

I have had cysts on my ovaries and cervix come and go. .

I am 28 and now showing signs of POF premature ovarian failure/early menopause. I have gone from a bleeder to now i dont get a period for 8 weeks, i have hot flushes, i sweat at night.
Waiting for bleeding to stop which has now been 3 weeks heavy, same as previous 2 periods which was 6 weeks between and lasted over a week, then 7 weeks between and lasted 2ish weeks.
Im taking Tranexamic acid 500mg to stop bleeding so far a week and it has slowed it down. Im scared i wont carry our baby and i feel like i am failing as a women, a mum and a partner. If you have been told this and still ovulated and fell pregnant i want to hear your stories and if you done anything to try and help. I can have tests done 21 days from when bleeding stops. I have home ovulation tests, I have tried not to stress and think the worst. But i am.