Pain with braxton hicks?

I have had bracton hicks since 24 weeks. Tonight, for the first time in maybe a month, my husband and I had sex. Since then I have had 3 braxton hicks accompanied with sharp pain above my pubic bone. The pain slowly goes away after the contraction. I am totally freaked out about preterm labor. My OB doesn't work Friday's and I have called so mny times I don't want to call again...

33weeks by the way