Hi I have 4 kids, 10,5,3,2. My period was due over a week ago, I have done 4 tests, 2 tesco ones, 2 boots ones. All have come up negative, my periods are a nightmare!!! Heavy, painful, and they make me unbelievably tired. I have horrific hormones the week before, when I'm on then when I'm off, I am a woman possessed for 3 weeks of the month! But nothing I am still calm as I would normally be, I've got slight backache, but that's it. I have never ever missed a period without being pregnant and all my boys test came up within the week of me missing it. Could I be pregnant with a false neg? Please help