What is happening ??

So i had sex w boyfriend( my first time )on the 4th feb, it was painful to say the least so the next two days I've experienced lil bit of burning sensation down there and frequent discharge. I know that the reason behind this is because my PH was thrown off. Today the burning has gone away but still lil discharge and when i went to check i found this! Now i am confused is it my period coming early or what exactly? My next period is due on the 14th. And yes we used a condom. Need your thoughts please and sorry for tbe TMI pic