I don’t understand 😭 PLEASE HELP!!!!

My cycles are all over the place. They’re anywhere from 25 days to now stretching to 34 days and I don’t know if I should just... be concerned or if that’s just how my body is? It slightly stresses me out but at the same time I went back through my old cycles and found my body going back and forth between somewhat short cycles to longer cycles. They’re now getting longer and I don’t want them to just all the sudden stop coming around because I haven’t even had the chance to make my own babies and I’m not ready to have that option taken away from me. My friends told me to go to my doctor however my Grandparents are strict about me going my doctors because I get sick so often and they don’t want our insurance dropping me. I also have issues with my stomach and I have seizures so it’s just starting to feel like my body’s against me. I don’t know if my April cycle’s gonna be shorter or longer than my March; 34 day cycle for this month so my question is, what would you ladies do if you were me?