Third trimester poops

Since 32 weeks I've been pooping daily and sometimes multiple times a day. It's very painful because I get these period like cramps and I'm basically in tears. I'm not constipated, nor do I have any issues pooping I'm used to going 1x every 2-3 days without issue. Now I am going daily and it's soft and easy to get out I just have terrible stomach cramps right before going. What does this mean? I haven't changed my diet, or exercise level, or even water intake. Everything is the same. Someone told me my body is cleaning out for labor, and others said they don't know exactly what it is. Has this happened to anyone else? Should I bring it up at my next appointment?