My cycles are usually regular 26-30 days, I'm now 19 days late on cycle day 49 and no period, cramping for the past week, took 2 tests last weekend both negative. Usually when my period starts I cramp the day before or day of my period, never a whole week before. Should I wait and test agian? For some women does it just take a couple more weeks for it to show up + on a test? Has this happened to anyone and they ended up not being pregnant?