Think I'm out this month

So this morning I wiped and there was blood and like brown gooy discharge and so I put a pad in and figured it was my period... but no more blood the rest of the day. It was quite a bit of blood that's why I'm thinking it's my period. AF is suppose to be here Monday so it makes sense but why aren't I bleeding anymore? I'm a bit confused my period is always full blown when I start! This happen to anyone