What Causes Thick White Discharge And Breast Pain?

i had my period last on dec 26 i didnt get it on january 26 and i did have sex with and with out a condom at least 3 or four times a day and in the shower for a week and a half w my boyfriend. i jus got my period last night but its been very light and noe its going away today. i also have this white thick discharge doesnt itch or burn. am i pregnant my boobs also hurt im tired.