Braxton hicks or not ?

So the past few days now my little man hasn't been as active as he usually is and in the process I keep getting this weird pressure like I have to poop. it doesn't last long but it comes in waves. my tummy doesn't tense up that I can tell but I do get a period like cramp going on sometimes too. But also i have to poop like 3 times a day now so I'm unsure of what I'm even feeling. Has anyone else felt things like this? Oh I'm also 30 weeks if that helps.