I had unprotected sex on 2 days this week. he pulled out however my period is 3 days late and i've found a cloudy/white watery discharge.

Pull out: Pulling out is probably one of the worst ways to avoid pregnancy as it usually doesn't work. During sex men produce several drops of precum and each drop has about 20 million sperm/drop. In addition most men wait until this last second to pull out and end up depositing even more drops at the end. Time to check a pregnancy test and if negative stop using this method. Try the pill or a condom.

U might be pregnant: If you had unprotected intercourse, whether or not your partner intentionally ejaculated inside you, you could be pregnant. If you are late with your regular menses, you may or may not be pregnant. If you combine the two possibilities, you will find the risk high enough to warrant a pregnancy test. The cloudy/white watery discharge is incidental and unrelated. If you think you have an STD, see MD.