Birth Control Help!!

I recently started birth control on May 5 (it’s the 8th now). Me and my boyfriend have a very intimate sex life. I’ve NEVER had problems getting wet, and it always happens very quick and easily. We tried to do something for the first time since starting the pill. i COULD NOT get wet. I knew I wanted to do it, but my body was not helping me. Does anybody know what I could do to fix this, or why this might be happening???