I had protected sex while on the fourth day of my period, it usually only lasts about five days. Anyway, a couple days later I was very weak, dizzy and had really bad headaches although I hadn’t eaten in a while. It’s been 3 weeks since we did it and for the last 2 weeks I’ve been severely constipated, bloated and nauseous however I don’t have any other signs of pregnancy. I’m fairly certain it is from not taking care of my body properly as I very rarely eat and I also had flu symptoms such as a dry cough, runny nose and phlem. I’ve also recently this year suffered from vertigo so perhaps it has come back? Although, I am still worried as anyone who doesn’t want a child would be.. the thought is always there. Just want some advice.