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so on 8/20 i was experiencing severe cramping. i was at work and when i went to the bathroom to check, i saw i had started my period (what it looks like). now i wasn't due to start around 8/24-8/25. i was very surprised and totally caught off guard (had no pad and no tylenol on me). the color was bright red but the flow wasn't so much, mostly comes out when i wipe and when i wear a pad (i wear ultra thin ones) there is some that goes on it. is it possible for this to be implantation bleeding? or could it be my period just coming early. these are the dates of my period since march (3/7; 4/9; 5/4; 6/; 7/27). based on the 7/27 cycle i was thinking i would get it around 8/24-8/25. based on the 7/27 date it would've put me ovulating around the days of 8/10-8/12. the week of 8/10-8/12 i have been having severe cramping. around 8/11 or so my br___t got swollen and painful (i was wearing a bra at night to protect them). the pain now is gone but they still feel very swollen and tender. sometimes i get shooting pains on my br___ts on/off. i also had severe diarrhea the week of 8/10-8/12 and now i have constipation. i have bloating and cramps that are in my lower right and left and lower middle abdomen as well as my legs . i did get a few unusual food cravings. my sense of smell has hightened and have been having severe headaches. if it is my period that started 8/20 then it would have put me ovulating around 8/4-8/8. i don't do any temperature charting, just keeping track of periods. i have heard that it is possible to have bright red implantation bleeding. any info would help. thanks.