I am having the same problem. My last period was June 24th which put my ovulation at July 8th. My husband and I had sex around on and around this date. I am now a few days late and have been experiencing swollen, tender breasts, frequent urination, neausousness, headaches, emotional sensitivity, etc. I have taken 4 hpt's and all have come out negative. I just am beside myself as this is my first time to experience this. Then yesterday when wiping I had saw light pink and then today a little darker. No need for a liner, but seeing this has me upset that I might be starting my period. Everyone tells me this is normal, but I just don't know. If I am pregnant, when will it show up on an hpt?