Confused

When Sunday came and went with no AF i thought Yay this could be good news but after mon and tues testing with a negative result now im confused, i counted and counted 29 days excatly have passed and shes never been late without being positive on my test....I understand that every pregnancy is different and my body is different frm before but if this is early menopause or something im gonna flip out. Im 35 i should still have time! i guess nothing to do but wait to see what happenes first ...AF or BFP...i prefer baby news.