My boyfriend and I dry humped/grinded while we were fully clothed. He was wearing pretty thick cargo shorts and boxer briefs and I was wearing nike running shorts with a panty liner and a lace thong. We grinded and made out, but tried not to grind directly on each other's genitals. He said he was 100% sure he did not ejaculate and there was no wet spot on the outside of his shorts. There was no wet spot on the outside of my shorts, but there was a wet spot on the inside of my shorts that got through my underwear. I was ovulating or close to ovulating at the time. Should I take emergency contraceptive. This happened less than 48 hours ago. Could I be pregnant?