I had sex 3times in 1day & take my way morning after pill the same day will it work !? does it matter how much times u had sex in one day ?

It should still work: Plan B (or other morning-after pills) taken one time does not cause any permanent changes. Plan B is for emergencies, meaning it should be needed only 1, 2, or 3 times in a lifetime. That means rarely, if ever, use it in an entire lifetime. It should not be used as routine birth control. If having sex and not wanting to get pregnant, always have a good contraceptive method, a Plan A, in place.