I posted on the parisite cleanse forum but it occurs to me this might be a question to do with a reaction to the herbs.
I am on day five of the Clark Parasite cleanse of Black Walnut Hulls, Wormwood and Cloves (I skipped a day because I thought I was pregnant).
Anyway I have had some interesting symptoms including heavy (I mean very heavy) menstral flow and morning sickness (slight nausea upon having an empty stomach). I read that both cloves and wormwood can produce uterine contractions.