My situation is kinda similar whereas I used to have a 4-6 day period now for the past two months its been like heavy for the first 2 days and light on the 3rd day and then the fourth/fifth day it would be just spotting. Thought I could be pregnant but then I took like 4 different brands of pregnancy test and they all came out as NEGATIVE. I had a regular 4-6 days period on April 2nd- 6th and then in May it came on the 30th and lasted 3 days. The last time I was sexually active was about 2 weeks after my period ended in April. I stopped thinking I was pregnant after I saw my period in May, then it came again on June 1st but just like May it lasted 3 days. Then ive been reading so much online and now I'm really confused because I cant sleep thinking about this. I have no pregnancy symptoms. I just sleep alot which is usual for me because I work 10 hours a day(8am-6pm) and when I get home i'm usually tired so I just go to bed and wake up 6am the next morning. I dont usually feel sleepy during the day. A few days leading to my period I had what I believe is PMS which was back pain /my breast were a little swollen and my body temperature was rather high. I dont feel nauseous, i dont have frequent headaches and all the other early signs of pregnancy. I've read that if your daily routine changes a little then that causes your menstrual cycle to waiver a little. I have started jogging a few weeks before my period came. I dont know if that made a difference. I dont know what to do anymore because all the tests ive taken are negative. Anyone with some facts or similar situation I'd like to hear from you. Your help would be appreciated!