the pill and sex

I've been on the pill for about 5 months now. This month, my boyfriend and I had sex quite a bit, but he NEVER came in me. EVER. We would never do it more than once in a day. He would always pee and wash off before we had sex. Should I be worried about being pregnant? I haven't had symptoms of pregnancy, but I'm on my sugar pill week. I've been getting light cramps like my period is close.