Am I pregnant

I had my period on the 12 of February and I ovulated on the 28 of February and I had unprotected sex on that same day I ovulated and the following day but I took the morning after pill on the 3 of march because I’m quite not ready for a baby with the guy I’m with atm, but I end up getting my period on the 11 of march and I bleed for 5 days the thing is the first day looked like a period but the 4 days afterwards I was spotting, plus I’ve been experiencing all theses symptoms like nausea with vomiting , fatigue, backache, pelvic pain , cramps mainly on the left side of my stomach, and today I tested positive with clear blue ultra early in the morning and I tested again 3 hours later with the digital clear blue and it says negative but I’ll test again tomorrow. Has anyone felt like this and ended up pregnant or not cause I’m freaking out ?