Today morning I saw some light bleeding in my panty. According to a period tracker app, my predicted ovulation day was 17th. I also felt fatigued today evening. Please note that I am on certain prescribed medications (alembic wikoryl, spheropan dsr, cefpodoxime proxetil ip and one more medicine I don't know the name of) because I had fever. I had cold on 15th morning which became a fever by 15th afternoon-evening. The fever displayed the characteristic of a viral fever. It was disappearing and then coming back. Also, my bf and I made out on 15th and 16th. There was no penetrative sex. Just cunnilingus, fellatio, fingering & hand job. I am 20 and my bf is 19. We were careful enough to not let cum come near my vagina. But there was some dry humping. Can sperm get through clothes &enter my vagina? Could sperm stain the sheets & then later enter my vagina? Although we changed the sheets once. I am concerned about the bleeding because my predicted period starts on aug 1. Could I be pregnant?