Should I go to the doctors for stomach pain?

I've been having stomach pain since last night it kept me up all night. It's a really sharp pain and it hurts more when I sit down or go to the bathroom. I know it's not a bladder infection or vaginal infection as I've had both (from pregnancy). I have an IUD and for the past couple of months my period has been lasting about 3 weeks heavier than normal with about 28 days in between still, if that means anything. Also, I just got off my period about a week ago so I don't think it's cramps. It's pretty painful I would say 7 out of 10. I don't want to go to the doctors if it's something simple. I've had a bowl movement since and it hasn't made any difference so I don't think it's gas either. Any ideas? Should I just suck it up and go?