Hi. I'm 25 yrs of age. My fiance and I had unprotected intercourse about a week ago, the day after my period had ended. in this last week i had the most painfull tender breasts that lasted for only 2 days it hurt even when my bra touched it. Now that has gone its always itchy and im having light headaches on and off, having funny tummy cramps and light nausea but never vommit and also slight back pain and im ALWAYS hungry and im not much of a big eater. I urinate more often than i ever have and it feels so uncomfortable that i need to go immediately as if i would wet my pants but when im in the ladies nothing much happens or its not even that much as it feels. what does all of this mean? It cant be possible to tell so early if im pregnant or even have the symptoms right?