Could I be already?

So I got married earlier this month and decided to go off my pill on the honeymoon, I had my period as expected from the 10th-14th. I've glow says I'm in my fertile window now. The thing is I've been nauseous the last 4 days (particular after I wake up), crampy, bloaty, sore boobs. According to glow I'd be lucky to have implanted by now, but is it possible that after going off the pill I ovulated earlier than usual? Could I be pregnant already? Or are these just normal cyclical symptoms that I haven't felt for so long as I've been on the pill!?