You probably are reading too much into it, but if you feel uncertain I'd definitely talk to someone about it simply to put your mind at ease if for no other reason.

I can't remember exactly when DS engaged, but I do remember it was somewhere in the mid to late 20 weeks…..maybe week 26 or 27. As in head fully in pelvis could DEFINITELY feel his head when I was walking sitting standing…bascially had a head between my legs for a good 15 weeks. As for contractions I started getting BH in week 16. Apparently while not common it does still happen and my ob wasn't at all concerned simply because my cervix was still firm and I wasn't remotely dialted. DS went full term…born 1 day before his EDD.