Boyfriend accuses me of being pregnant....

C93
He and I have been sexually active for a while, I officially went off birth control about three weeks ago. My end of my fertile window "supposedly" -as in if I actually had it- just ended today. I think he's really hoping I'm pregnant so maybe that's why he's saying that all the the time "maybe you're pregnant" but im usually a furnace and the past three or four days I've been freezing. My nose is super stuffy. And I get nauseous here and there but I sometimes do that if I don't drink enough water anyways so that isn't too unusual... But I have another two weeks before my period. If it comes since I'm not very regular when I get off BC ... So any opinions? :/