Doomed with molar pregnancies?

I got pregnant while I was 15 in July. I am now 16 and lost the pregnancy 3 months ago due to it being a molar. I was on the Depo shot about 10 months prior to getting pregnant. I read some places it’s best to wait 12-18 months until after the shot to try. I didn’t try and do not plan to anytime soon. Could the shot have caused it? Or was it because I was too young? I just dont know because I know a good amount of people who have babies or had babies that young. It’s honestly broke me but I’m doing okay now. Can someone have molar pregnancy their whole life because their eggs are empty? I know most of you aren’t going to be able to answer and that’s fine. I’m just scared to ask because I don’t want my doctor or my mom to think I want to have a baby soon. But I would be upset if I can’t carry a baby. And if I can’t I’ll more than gladly adopt. Anything helps. :)