Pooping more?

So today I've been having some lower back pain. I'm told normal for pregnancy. But it's almost like cramps in my lower back. Weird. On top of that I have popped 4 times! Not dirreah but just a lot of pooping for me. Usually I go once a week due to some gastro complications!! Think anything of it? Been having some pelvic pressure and period like cramps too. But nothing dibilitating. Thinking is all probably just pregnancy! Haha! But thought I'd ask. I'm 27 weeks.