CERVIX OPEN??

I’m 32 weeks pregnant tomorrow with my second. I’ve been having pretty consistent BH contractions. Within the past 4/5 days they’ve really increased. Today I went to the dr and they checked my cervix. Said it was open in the front and towards the baby’s head it’s closed. He ordered an ultrasound for me tomorrow to measure my cervix. Anyone experience this before? Should I be worried?