We had unprotected sex for 2 days, without withdrawal, and we found out it was my fertile week. We have no plans of having a baby YET. so we turned into plan B. I drank 4 pills asap after sex, and 4 pills after 12 hrs. Do you think it's effective?

I'm experiencing abdominal pain/cramping, feeling hungry always and nausea. No vomiting. Headaches too. Is this the side effect of the pill?

Help me.