where is the af/disappeared/preggo?

dry humped with clothes and no ejaculation (I don’t think be pregnant from that ?) on the 20th of April. Got my period on the 3rd of May. My app says I should’ve had it by now because my cycle is usually a bit shorter and recently its been kind of irregular. the May 3rd period was pretty abnormal-lasted 4 days (usually lasts 6-7) and just less blood but still enough for pads. last week I had cramps for THREE days without a period and some breast tenderness. my breasts are still sort of tender. no period!! cramps HAVE NOW DISSAPPEARED FOR 3 DAYS AND STIKL NO AF !! what’s going on????