When can I ask for a hcg blood test

I am five days late and have lots of pregnancy symptoms, my body feels completely different and I can just tell that something isn’t the same, I have tested everyday since my missed period and all negative, I understand that some people don’t develop hcg levels as fast as others but I need to know ASAP if I am or if I’m not because I need to go to the doctors about maybe coming off my antidepressants if I am.. is it too soon to ask the doctor to send me to get bloods done? Helppppp