Poop problems 💩😅

Sorry if this is TMI! So I'm 17 weeks exactly and for the past couple of weeks it seems like I'm either constipated or having diarrhea, there is no in-between. I won't have a bowel movement at all for a day or 2 and then the next day or 2, it's like my body clears itself out completely (which is a relief, but at the same time annoying because I never know when it's gonna hit me). I never had this problem with my first pregnancy, should I be concerned? Anyone else dealing with this?