Girls, is there any pain in the pelvic area after childbirth? Or maybe…

Girls, is there any pain in the pelvic area after childbirth? Or maybe it's just the stitches giving you trouble, while they dissolve (how long will they hurt?). At 16 weeks, I started feeling pain in the pelvis, my doctor didn't send me for an ultrasound, and that's how it is today, especially if you spend a lot of time like this. Is this simply a consequence of pregnancy now or something else, like bone separation that needs treatment... Next week I'm going to see a gynecologist, but I think she doesn't even know what kind of examination or ultrasound is needed in this case. And who had strong stretch marks, how did they get through them? Literally in the last