7 Days Late... help please!!

🙋🏼
My period is like clockwork... Always 28 days. Well I am now seven days late and keep getting negatives. I don't feel like AF is coming but it would be nice to see that BFP! Any suggestions? How long should I wait until going in and maybe asking for blood work? Any other thoughts? This is the test I just took. Pic taken at 4 minutes. 
Thanks everyone! 😘