okaii so i got my period jan 1st. its the 21st of january today. i dont really have a regular period but i dont feel like myself lately i had sex but used a condom but one night my bf came on my vagina is it possible that it was close enough to get inside? about 4 days after this occured i went to the bathroom and was spotting it was bright red blood but it was very VERY little blood. ive been getting lots of cramps since then but im thinking that could be my period because i get cramps alot! but today i felt nauseated from about 9am to about 1pm i dont know if i had the flu or if this was a sign im pregnant. My breasts feel quite tender on and off as well as my nipples appear to have gotten larger. i also am sore in my lower back which is strange cause i havnt done anything that strenuous to my back. i dont know what to think? is it possible that these signs and symtoms of pregnancy can occur this early on? should i be concerned or should i assume this is just my period?