i would go and get checked out A.S.A.P. this does NOT sound good but it could also just be growing baby putting pressure
I would definitely call your dr. You should really get checked out to make sure nothing is wrong!
feeling pressure or sharp pains in your cervix is pretty normal during pregnancy and is usually the baby putting pressure on your ligaments. However, I would contact your doctor and request to be checked out just to make sure it isn't anything else.