hi if your stressing your self by thinking your pregnant then you will try and notice any small changes around your body as could be signs. you have had two periods since you last had sexual encounter even though you are protected unless your working on the 1% chance. just try thinking i'm not pregnant and see how you get on perhaps this will change your thoughts but just having a 4 day period means you just had a 4 day period and this could have been from just stress if you was really stressed you may have missed your period altogether. hope this helps. good luck
four day period could i be pregnant? . i'm on birth control. i had sex without a condom on 11/4 and i got my usual period. however 2 weeks after being intimate i started feeling nauseous and getting pains in my lower abdomen. i took two pregnancy tests a week later and they came back negative. . i got my period again except it has been shorter. i usually have 7 day period and i haven't bled at all today(day 5). a few days before my period came i noticed my nipples get a tad darker and there's a slightly darker line around it.