Hi I Gt Period On Feb 28 Then On 1

hi i gt period on feb 28 Then on 1 March had been wid my boyfrnd tht tym i was wearing my pant and was wearing pad bt he was nude i sat on his lap on penis now til today didnt got period sum white milky discharge is cuming sumtym frm yesterday i m worried am i preganat .Wht should i do plz help
which medicine should i take to get immediate period
Gidiness chakar little i m getting bt is it due to worry or y is it happening