I'm 17 and had unprotected sex in May. I had my period in May a few days later, and my period June (though it was early) I also had it this month (on the same day as the last one), but am still very worried. I've had constipation for quite some time and am now drinking green tea and taking probiotics, I'm worried like hell because I'm nauseous and have some pain all over the tummy and feel bloated. Please tell me I'm not pregnant!!