Are any of you taking meds AND P4 at the same time? That seems odd to me!
Icky but true: The vaginal suppositories go inside, melt, the meds get absorbed and the waxy stuff they come in them leaks out slowly or quick, if you go to the bathroom. (That is also why it is good to rest after you take one, so it has time to do it's thing!)
It can seem like CM but is not sticky or egg white-ish, really, just runny until it gets cold and gets waxy again.