So all day today I haven't been feeling very well and had a lot of back pain and some light menstrual like cramping! I'm 38 weeks pregnant btw... anyway when I got home I had diarrhea and my mucus plug fell out.. a few minutes later what I thought were contractions started but it's not tht painful it is just an extreme amount of pressure and are still irregular is this it or does it sound like Braxton hicks