No Period Yet!!!!

Offilia
Hello ladies,
Well I took a pg test about a week n half ago bc of the weight gain. My period was apost to start on 3/11. Today is 3/20 and no period yet. I am very scared to take a test for it to be negative. My husband said to wait and see bc I am not experiencing any symptoms.  I think he is nervous for it to be a negative also. What should I do???? HELP!!!