Pooping Question! 💩

Rebecca
Sorry for the gross post. I'm just about 33 weeks pregnant, and for the past 2ish weeks, it really hurts when I poop. It's not hemorrhoids. I'm not constipated, and there's no blood; most of the time I'm pooping 2 times per day and don't really have to push. But every time I poop, I get immediate and intense pain right in my butthole that goes away just as fast as it comes, as soon as I'm done pooping. It happens every time I poop, without fail. 
Has anyone else had this experience? Should I call the doctor? To me, it seems like a pregnancy cross to bear kind of thing, but idk if I'm just making light of the situation.
Thanks!