Am i Pregnant?

I normally have a very irregular period. Every month it comes 1 week or 2 later than the last month. My doctor put me on birth control for a year to try and regulate it. Well recently i have finished my year of birth control. I've also had unprotected sex last month using the "pullout method."
​Well my last period started on the first of last month so i estimated for this period to show around this week.
​It hasn't yet.
​I've been having slight nausea  but never to where im going to vomit. Im not sure if its all in my head or not.
​About 3 days ago i started having light cramps. Not really sure whats going on. 

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