Wha is it?

hi, im 23 and a bit worried because im getting light pink discarge. I came off my period a week and a half ago so pretty sure its not that. I had it a few days ago then noting untill now, iv also been getting very slight aches in my stomach the same time as i have the discharge..Could i be pregnant?... I have had unprotected sex with my boyfriend about 2 days after my period... :-(

Anyone have any ideas..