Worth going to a GP?

Hi! I've been struggling with heavy gut cramping and I'm not sure if I should go to a doctor.

For context: I'm 22 years old, F, and I have a diagnosis IBS. I have other symptoms as well, and they feel like endometriosis (with what I read online). Only thing keeping me from going to the doctor is; I don't have heavy or really painful menstruation. Of course I have cramps and a heavy flow for 2 days, but I think that's not something to worry about? But I do have A LOT of belly aches, mainly on/in my bowels.

Is it worth going to a doctor and go for the battle of getting a right diagnosis? I've heard you need surgery to see if there's endo and to go head to head with a lot of doctors because they're not taking you seriously...

Anyway, I'd love to get some advice. Thank you :)