Question

Okay so I'm just curious. I had a very light cycle 12/22-12/24 no cramps and light flow. I well I had spiced things up with my partner Tuesday because my drive was intense lol. Well today I go to the restroom and see spots on my panty liner kind of red brown but I went to wipe it was a pink/red/brown/sticky discharge. I'm only 21 and have no clue as to what's going on. In the past I know if I had sex before a week after my period it would start again but nothing like this and yesterday I had an extremely wet feeling with a clear sticky discharge. Hellp please