Jess,

Do you think it may have something to do with what you have eaten?? Also it could have to do with your iron levels. Not 100% on that one though. I wouldn't stress about it too much. If it was fetal distress it would be baby poo coming out of your other bits not your bum If your really worried ring and ask your midwife, it has to be less embarressing on the phone than in person.

Take care
Trish