Ummm 🥲

So I took a plan B early December got my period the next week great right. I had unprotected sex on the 3 of Jan and still no period. He didn’t cum in me but idk that for sure because he was also drunk. I been feeling dizziness, nauseous and cramping but my cramping have stopped. I’m almost a month later. Am I still having symptoms of the PLAN B?