So me and my boyfriend went on holiday during my most fertile week. I’m on the everyday pill which I usually take around 10pm. That evening we had really good unprotected sex then I took the pill at my usual time but due to having had alcohol that evening I threw up about 10 minutes after. My period was two weeks late but I had a very light period (normally heavy) which lasted about 3/4 days. It is now a week after and I have what feels like menstrual cramps and can’t get rid of a stuffy nose, feeling lethargic and bloated. Could I be pregnant?