Pink discharge ?

So I had my period ab a week ago. if you even want to call it a period it was the lightest period I’ve had in my life, & even before that I had pinkish spotting going on. So now a week after I’m getting some pink discharge again & it’s kind of worrying me. When I look it up everything says it’s a pregnancy symptom? I have been feeling kind of off & weird lately. I’m sexually active w one person & every time we’ve done it without a condom & I’m not on anything (dumb Ik). I took 3 tests, all negatives. so I don’t know what’s going on this has never happened to me before ? Any ideas ?