Nexplanon

So I have had the implant for almost 6 months and about a month ago me and my man were doing the dirty and he came in me. Well I haven’t gotten my period and I’m over a week late. I took a test cane back negative but still scared that I might some how me pregnant. I’ve only ever skipped my period once while on this birth control and it was after the first month of me having it. Has this happened to anyone else? Also in the search of a new OBGYN mine quit so I can’t call to ask about this.