Hi, On Friday My Vagina Was Touched By A Unprotected

Hi, on Friday My Vagina was touched by a unprotected penis my boyfriend did not come or anything. And then on the Saturday my boyfriend ejaculated on my vagina, I immediately washed it away. I could only get to the walk in centre however on the Monday Where I was given the medication leveonelle. I was due to have my period on the Sunday and it has still not happened, can you help me calm my nervous at all? I'm very scared at the minute after reading articles online