parasite or blood (graphic pic)

Is there anyone that has ever seen or experienced this before?
After New Years I wasn't feeling well. I thought it was all the food from the holidays. I began having loose stool followed by diarrhea on and off for about 2 weeks. Then after dinner one evening I felt very bloated, sick to my stomach and passed whatever this is for the first time. It was no where as much as in this picture. I decided that perhaps I caught something and I'd eat easily digested foods and let my stomach have some down time. Everything appeared to be on the mend and then last Friday I awoke not feeling well and passed this. To say that I was horrified is an understatement. I have never had anything like this ever before these two occurrences. The only significant thing that keeps going around in my brain is that our friends dog licked my face on New Years and could I have caught a parasite from it. May be a long shot but that is really the only odd or different thing that has happened. I'm nearly 100% certain it is NOT food. I eat a very plain diet and mostly the same things because I have a history of a sensitive stomach. Thanks to anyone who has any thoughts.
Also the flecks run completely through the BM and look more red here with the camera flash then when I first saw them. Both times I thought they were black but perhaps maroon would be the correct color. Tweet