Okay so I've been feeling kind of sick since yesterday around 2:30 pm, and my period was SUPPOSED to start yesterday (June 23rd). My cycle is known for being stubborn and all over the place, but I had sex June 5th and 9th with a condom. I also know that it's normal to feel sick-y before your period but it's just making me feel uneasy... please comment/post below if this has happened to you or if I should be concerned