What Could Vaginal Discharge, Dizziness And Weird Taste In Mouth Post Unprotected Sex Indicate?

Hi I m 19 and 5 days ago on the last day of my period I had unprotected sex and I did have some gooy brow stuff come out of my vagina the day after and some gooy stuff for like two days now I have dizzy spells, headaches and bad lower back pain I also have a slight weird taste in my mouth what does this mean? Am I pregnant?