Missed period

Ashley

I had sex three days before my period in November and then I got my period the day that I was suppose to get it. At little after Thanksgiving I started feeling sick. December came and I was scheduled to see my period on the 10th. Instead of my period I got some light brown spotting that only lasted maybe one hour. I still didn’t see a period after that. Around the third week of not seeing my period I started having discharge that was jelly like that was clear to whitish looking and no odor. I took a test but it came back negative maybe it was too early idk. Anybody knows what this might be?