need to rant 😢

Wow this baby making stuff is really draining. Why is it that anyone and everyone around me seems to be pregnant? Why aren't i? Is there something wrong...
My mom has 5 children all of which she conceived within the first/ second month of trying.
My 15 year old sister has sex ONCE! Her first time! And falls pregnant 
my friends, are all popping one out and I just can't help but feel jealous! Like I'm totally happy for them of course. But when is it my turn?
Honestly, the DEPO injection should be discontinued. Like you shook not be allowed to have it unless your 100% sure you never want children. 
I have never had irregular periods. Ever. I worked like clock work. Every 28 days. But now, after stopping the DEPO injection- my cycles last 45 days plus!! I've been off the depo for 10 month, I had my first period January 31st .... Then my second March 15th... And nothing as of yet.
My doctors are useless. I find more information on Google. What am I to do honestly. I used opk's this month, I had quite a dark one on the 1st April, however they stayed that dark for weeks. So I can't even count that as a positive. God knows if I'm even ovulating. 
Negative after negative, I'm so drained. I wish my body could resume normally again! 
I'm fearful that there is something else serious going on 
Just needed to get that off my chestÂ