Contractions

Imaan

Hey ladies i m 38 weeks and having contractions after 10 min... they are not strong but i feel pain in back really bad .... plus since last 2 days i m 2cm dilated .. i don't know i was 2 cm before too but the contractions are not opening the cervix and i am 60% effaced. I also saw some browinish spots todays with white discharge ... is it normal?.... am i near labor ?....how long will it take for me to go into labor?..... its my 4 child and never happened before ... last pregnancies were so easy..... anyone help