help plzzz

Traffi

i will be 39 weeks tomorrow last appt I was 1 in a half centimeter open. how would I know its time to go to the hospital ugh last night a 5am I've started to have a lot of pressure like a lot plus when baby moves its painfully.....plz help how would I know I've been loosing my mucus plug in pieces 2 days ago I lost big pieces but with no blood