 [ Symptoms ] could i possibly be pregnant i only had a four day period 100412 first 2days were heavy the last 2 were light mr periods usually last 6 7 days this period only lasted only 4 days i got my period on 10 04 12 the first two days were heavy and then i stopped bleeding for bout 4 hours then after that the last 2 days were light i got sick saturday saturday i went shopping and then i threw up then i was perfectly fine again some foods i like are making me sick my breast seem a lil bigger then usual i took test last a week ago it came out negative my stomach feels tight i gained weight [ Disease ] i can certainly see your concern however since your pregnancy test was negative it is unlikely that you are pregnant i would recommend that you see your doctor just to make sure since you are having symptoms of being pregnant your doctor may also do some bloodwork including a thyroid test to see why you may be having the unusual menstrual cycles and the other symptoms which you are experiencing