I had FIVE negatives with DS1. Friends kept telling me to stop looking if I'd had 5 negatives (wasn't wanting to be pregnant as I'd not long moved in with hubby) because I 'obviously wasn't'. I knew I was because I felt like complete crap and I remembered the date of my last period (was my mother's birthday and I was averaging a box of tampons every 2 hours), I was due the day hubby and I moved into our first home together so I stocked up on pantie liners and tampons. They were still in the cupboard 6 weeks later when I filled up the toilet rolls un-opened so I knew. It was a routine ultrasound I had to check for cysts we told the sonographer our suspicions and she confirmed it. And there he was, almost 9 weeks along and not a single pregnancy test could tell us what we already knew. If you think you are but are having problems with a HPT, ask your doctor about drawing your bloods. They will tell you. Fingers crossed for you!!