My boyfriend ejaculated inside me , 2 hours after i took a morning after pill. could this reduce the chance of pregnancy or did i take pill too early?

Both Good and Bad: Good... took the pill. Bad... let guy ejaculate inside when not wanting a baby. That said, the pill should work. Plan B (or other morning-after pills) can alter the menstrual bleeding for the cycle in which Plan B was taken, and sometimes the next cycle too. Be sure to check a home pregnancy test about 3 weeks after sex, because a morning-after pill works most of the time, but not all the time.

Less chance : It is very minimal chance to be pregnant after taking morning after pill as far as it is taken between 48-72 hours of pregnancy

Timing correct: The sooner you use an emergency contraceptive after sex - the more effective.