I don't know when my next period is supposed to be but I do know that it is supposed to come towards the end of the month which means I have missed my period. My breasts are tender, they appear swollen, i experienced nausea once about three days ago. I am in a monogamous relationship & we have unprotected sex. Almost two months ago, my mirena fell out. I'm not experiencing any other symptoms other than being extremely emotional (my boyfriend had a tone in his voice & it made me really upset whereas it normally wouldn't) but i took a test on June 22 which came up negative... please please please anyone help me.