Could I be pregnant?

Savannah

I’m currently 12 days late, but I tested at 5 days late and it was negative sadly. I have an almost one & 1/2 year old. We’ve been trying since our son was three months old. We stopped trying for a month or two and tried again. I didn’t know if it was possible for me to be pregnant even if the test at 5 days late was negative. I’ve been having a lot of mucousy discharge egg white color. No smell. Should i test or no?