5 days late, tests all negative

Hi so I’m on cycle day 38, 5 days late already and all my tests come back negative. Been doing fmu and no faints even, just straight negative. But I’m having a lot of the same pregnancy symptoms I did with my son. Exhaustion, frequent urination, dizziness and nausea, wet discharge, among some others. How long do I wait until I see my dr about this and ask for a blood test? I’m not sure when they’d see me, I’m in Canada If that makes a difference. We’ve been trying for 11 months now, what are the chances I am pregnant and all pregnancy tests are negative over a four day period?