Wednesday night I ate some canned chicken before church. I felt totally fine but afer church, which was about 4 hours later, I felt very sick to my stomach. I just thought it was a small virus and would go away within 8 to 12 hours. I ended up being sick every 30 min to an hour for 19 hours straight and went to the ER for dehydration Thursday evening. After leaving the hospital I started my cycle again which had just ended the following Monday. I have been bleeding since the very heavily and today (Saturday) I was having very dark brown almost black blood with small and medium clots. Is this from the dehydration? My husand and I were initimate Monday night but I wouldn't think this would be implantation bleeding if we were pregnant would it? (the hospital did do a blood pregnancy test too and it was negative) I'm just not sure why I am having a cycle again and why so dark?