Pregnant or just hormones ??

Hi ladies so I’m having some confusion. August 13 I thought I had gotten my period which would have been 5 days before it was actually suppose to come. My stomach felt all funny and very bloated but it turns out it was just brownish reddish mucus and not my period. August 18th I was suppose to get my period but it never came. I tested on August 23rd and pregnancy test is negative. I’ve been having discharge like this for quite some time now and today my boobs are extremely sore and my areolas are super swollen.

Could it be I’m pregnant or just hormones or what?

PS , I’ve been having unprotected sex so I know pregnancy is a huge possibility which is why I’m a bit confused on it being my period or pregnancy