Has anybody using MA ever had umm, I don't know the most pc way to say this, but pressure in your butt area

I have never had this before and I am thinking maybe the Clomid? but I haven't found anywhere that has that listed as a side effect. For the last couple days I have constantly, mostly in the evening, had this like pressure down there. Almost like a cramp in my butt, it kinda comes in waves too, and it's getting kinda uncomfortable, lol this is soo embarassing to even write!! It's not that I need to go to the bathroom, so I don't know what else it could be.