tmi.. ftm.. advise

Margo
Hey everyone so I'm 38 weeks pregnant tomorrow. At my 36 week appointment I got my cervix checked and was 1.5 cm dialated not sure how effaced I was but after I got checked later on that night/morning like at 3 am i had a mucusy blood discharge which I guess was my mucus plug/bloody show. And well I have had a couple contractions but nothing that worried me.. so on Wednesday @ 4:30pm I had my 37 week appointment and got checked again and doctor said I was 3cm dilated and my amniotic sac was bulging out already so as soon as she took her hand out there was blood and I didn't stop bleeding til about 2pm Thursday but it wasn't massive bleeding more like spotting and then this morning at around 3am again I woke up and had more bloody mucus a lot more but not enough to stain my underwear I guess I got lucky and caught it before it went onto my underwear, which continued til about 7am then started getting brownish color. Then at around 11am I got another mucusy blood clot again and  since then I've been having cramping and pain especially back pain.. does this sound unual or has this happened to anyone before or should I go in and get checked? I just didn't think my mucus plug could rebuild itself in a week and come out again. Just looking for some advise