Irregular periods, cramping

Lindsey
I've bee off birth control since December, and I haven't had a period since November. I had unprotected sex last Monday and took a morning after pill, and briefly had unprotected sex three days ago. He didn't cum in me. I took a pt last Tuesday that was negative.
I'm also having cramps, but no nausea or any pregnancy symptoms. How long has it taken y'all to get your period after coming off birth control?