For 4 months I did unprotected sex with my boyfriend and after that I will only have 3-4 days of mensuration for the past 4 months.This month I had unprotected sex 4 days before my due date.Recently I had spotting and I thought it's a sign of my mensuration but actually its not.The spotting was a red blood but only a bit.Then no more.Now I'm still not having my period.
Does that means that I'm probably 
Getting pregnant?And just now my boyfriend feels queasiness.. Am I pregnant.Hmm..

You have to wait about 1 to 2 weeks after your due date to take a test. We can't tell.

And his queasiness has nothing to do with it.