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.
I would definitely call your dr. You should really get checked out to make sure nothing is wrong!
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