Should I be scared ?

Okay so I pulled down my pants to go pee and there was brown like period brown in my panties. I just got off my period a week ago and this is my third day of ovulation and I'm not supposed to have my period for another two weeks. I get in the shower and while I'm rinsing off I swipe my hand under my vagina to make sure that there's no soap there and it was like light red... and I just stuck a tampon in and blood was came out on the plastic part. What do I do is there something wrong ? This has never happened before.