pregnancy symptoms??

Hi! I was just wondering if anyone else could relate or give me any input. November 21st I started my period and then I began to spot December 6th which is when i was scheduled to be ovulating. For whatever reason (I wasn’t really thinking) I just considered that my period and I had unprotected sex during that time. If the spotting was just from ovulation I would’ve gotten my period on Christmas and I never did. I have been nauseous for the past 5 days (I never get nauseous with my period) and today I began to have a lot of brown sticky discharge (definitely more than spotting, more like a period amount) along with some very light (in color and in amount) blood when I wipe. It has also been somewhat clotty. I was gonna wait until January 11th to take a pregnancy test but now with the discharge I am unsure. I know brown discharge can just be old blood but was wondering if anyone had any input or advice. Thanks!