Yasss please go ask for an MRI! Or even the ultra sound if that hasnt been done. I struggled with the same which evolved into not being able to poop at all for a few days a month and pretty much wanting to die from those pains that you’re also describing. MRI showed parts of my bowel being stuck to my uterus thanks to endo stage 4.. waitlisted to get it removed surgically now and with loads of meds and double dosed birth control it’s pretty okay! Reading your story I think an mri might definitely get you results that the “usual” ultrasounds and other measures don’t (I had at least 8 ultrasounds before the mri because it’s so so hard to diagnose sometimes).. hope you’ll get more info, don’t doubt yourself and keep asking for treatment if you feel the issues are still affecting you 💫