I'm 18 and just started Marvelon 21 two weeks ago which will be Friday 6th of May. I had unprotected sex on the 19th of May but I was 4 hours late of taking the pill on 13th of May will this affect anything? I just started the pill but my friend told me that it takes 7 days for the pill to take effect. And also my period started yesterday which was the 21st of May. My period just started on the 6th of May which is weird because this will mean it came 16 days after my last period. Is this normal? I don't even know if it's my period or not because the bleeding isn't a lot, even though I'm getting cramps and everything. Does the pill make my period come earlier? And how do I continue taking the pill?