I've never been pregnant but from reading these posts I can say that pregnancy symptoms are very similar to PMS. So, everymonth before my period I get tired, crampy, bloated, pee almost every hour and a half etc. Sorry if this sounds dissapointing but you can't tell until you test positive.
The last post is right, unfortunatly (as cruel as it is) pregnancy symptoms are very similar to AF symptoms. Increased CM can be a pregnancy symptom, no doubt about it, but it could also be another sign AF is coming. It is still a little early to test, hang in there a few days and get ready to pee on somethin