Could I be pregnant.

Natasha
I'm now 11 days late for my period, I did pregnancy tests when I was 3,4 & 5 days late they all said negative. I haven't done one since because i don't want to be let down again but I have been feeling sick, dizzy, headaches, light cramps every now and then, some foods make me sick when there usually my favourite, my boobs are that sore it hurts when I put a bra on, I can't get comfortable of a night time and I just don't feel like myself. 
I should also mention it was unprotected sex all this month just need other people advice on what they felt during pregnancy ? 
Thanks in advance to anyone who comments