Frustrated

My body is frustrating me so much. I really wish it would just work the way it’s supposed to. I got so used to not having periods regularly, maybe once or twice a year. I got on and then off birth control and it lasted two whole weeks super heavy. Tried birth control again after giving it a seven month gap and trying a new brand and again I’m super heavy and miserable. My SO and I don’t want a baby now. But we do want one eventually. I’m scared that I’m not going to be able to conceive with all this stress and frustration and my body not working right. I wanna be able to give him his baby boy that he’s been talking about for the past six months. I’m just really frustrated and sad :(