my way pill

hello. i am currently scared of my situation 
idk if i could possibly be pregnant & it's driving me nuts! 
I took the pill in December after my period that ended on the 13 within those days I had unprotected sex so I took the pill & 2 days after the bleeding came along as if it was my period. ((I read the side effects of it & mostly it said that if I bled its because it's working))
last week of December I again took another my way pill but this time the pill did not have the same effect on me I haven't bled or felt any of the symptoms I did before ...so now I'm scared ! & my period doesn't come until another week &'3 days ... 
what should i do? has anyone experienced this before... 
((my way pill is for emergency contraception))
i know I should take it this much but they were both emergencies *

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