Changes in sex; is this normal?

Amanda

Hubby and I are TTC. I'm 2 days late with my period, have not been stressed, home pregnancy test was negative this morning. We had sex tonight. It felt very different for me down there. It felt like my hubby was hitting something new. It didn't hurt just made me react different. Is this normal? PS we've had sex 11 times in this past two weeks and this is the first time experience.