Im on birth control and I have 4 more days till my period

jess • •24• •class of '18• 🎓🤘🏼 an I go on this app to keep w my sex life and other girly things! 🌸💃

So I’ve been cramping real bad all day yesterday and having sharp pains in my left overie and I wiped last night I had a tiny bit of blood and woke up this morning and I had a lot of blood like I started my period but I still have 4 more days till I start my period plus I been on birth control since I was 15, I’m 24 now so I don’t know what going on