29 weeks pregnant. normal pains?

Hey ladies. I'm 29 weeks pregnant and I have just been feeling "weird" or "off" the last two days. I've had a lot of back aches and menstrual like cramps. I feel like my period is about to start or something. I've also had lots of vaginal cramps and every now and then I feel like something in my vagina needs to "pop" If that makes sense. I also have gotten then sharp pains that run from my stomach to my back here and there. Baby is moving fine but I'm just wondering if this is a cause for concern or if it's just normal pregnancy stuff? I just really don't want to go to labor and delivery if everything is okay and I'm just over thinking it ☹️ first time Mom so this is all new to me and I just don't know what pain is "normal" and what pain isn't. Any advice will be great! I've also had 3 pretty loose bowel movements today which isn't normal for me lol