Hi all, my menses have been rather regular. i just missed my menses for 4 days yet test kit shows "not pregnant" any idea what can i do? Thanks.

it exactly happened to me last month, my menses came late 2 weeks as compared to my usual cycle. Same as you, during the 'waiting period', all the pregnancy test results were negative (even I took the test after 10 days) and I even went to consult Dr. In the end, my menses finally 'visited' me the next day after the consultation.