Story of my life LATE

Lateis becoming my life word... why is af late again idk... im not stressed yes i want another baby but im not stressing over it i know God will bless me with another in time. But why am i late like 5 or more days late... ive take two test like thw .88 cent cheapie from wally world and both negative. Why is my body doing this to me... i have become so tired the past few days and moody because im tired and sore all over now at night especially i feel sick. Any info would be appreciated. Insite anything. Ughhhhhh im miserable