Ok so I am on CD 30, and still no AF... I have slight cramping that just started this afternoon and had a very very light brownish tint in CM when I wiped.  I usually get my period on day 28 or 29... Should I take hcg test or wait a couple days? I'm so nervous and don't want to get my hopes up! Also, is it possible to get cramping around the time of period even if you are pregnant?