Me en my boyfriend had unprotected on the 3rd of july and again on the 9th of july.for the past week i have been experiencing headaches with diarhea,i get nausea when im in a taxi.. i also noticed that im very sleepy.my breasts are quite sore and feel heavy.im also havin period like cramps ..expecting my period on the 24th of july ...could i be pregnant or are all these pms symptoms.