What Causes Delayed Periods With White Discharge And Cramps?

Hi... I am 9 days to 2 weeks late for my period. My periods usually coincide with my daughters and so should have gotten my period around May 28 - June 5th. I took 4 HPT's between the 5th and the 9th and they all came back negative. I waited until today (the 14th) to go in to the Dr. and had another urine test done. This also came back negative. Some of the symptoms I have been having is a small amount of clear to white discharge, which is odorless, small amount of cramping in back and abdomen, tender aureoles to heavy feeling breasts, and fatigue. All of these symptoms have been going on, on and off now, for about 3 weeks. I did gain 10 pounds within the last month and my blood pressure is pretty high but not too much stress or anything else going on. Could I still be pregnant or is something else going on? The nurse said my urine was fine and I do not have a yeast infection. If I am pregnant when should I wait to take another test?