Could I be pregnant? Confused!

Hi, me & my bf are trying for a baby (have a 3 year old and had a miscarriage in January). My period is due in the next few days (they are irregular). Last week I started with really bad migraines, just feel different. I am so bloated! No matter what I do, the bloating doesn’t go down. I don’t feel like I normally do when I’m due on. I’ve done two tests this week and both have been negative. It’s 28 days since my last period and my periods are normally between 32-34 days. Have any of you done a test before your period and it be negative but you have turned out to be pregnant? It’s driving me insane, and it’s so weird as I feel pregnant but there is a doubt in my mind? Thanks x