Ob appoitment today

Got today today if baby girl tried to come any time now they will not stop her. Im currently 36-38 weeks, baby is measuring short but huge so they said they dont know exact date since i went to the OB so late and didnt know i was pregnant until i was so far along, anyways they said baby is head down and then she proceeded to find out where her head was and put alot of pressure on my pelvis and squeezed where she found her head. Ever since then ive been having major braxton hicks. Is that normal to happen after they look for babies head. We went to go do grocery shopping after and then took my toddler swimming and still these cramps are pretty much there. Anyone else experience cramping after they feel on where babies head is??