Any advice as to what it could be??

So recently I have been getting pain on my pelvis/ lower stomach, it’s more like pressure, no sharp pains. I only feel the pain when I’m laying on my side or laying down with my legs bent. Idk if anyone has felt this. I have been getting a lot of gas & noises in my stomach & after I go the #2 my lower body by my butt & pelvis feels weird like if I have to go poop again or feel like there’s still more in there. I do plan to call my doctor about it but I’m wondering if anyone has been having this problem?? Or what they think it could be? I’m a bit worried. Yes I’m sexually active & I’m on the nuvaring. Also it doesn’t hurt or burn whenever I go pee. I have noticed a bit more white discharge than usual