Maybe early labor???

Carolina

Ok ladies I been having strong stomach tightening went to get checked today doc was able to feel baby head pushing on my cervix which he felt closed.. am currently 35 weeks 5 d but my belly is measuring 37weeks which it goes by what the last ultrasound scan said two weeks ahead.. should I be worried in delivery early? At this point not sure what to go off by now and when am do.. I never have gone full term 40 weeks with any of my children