Help! Could I finally be pregnant?

Help! So, back in December 2015 I got my first flow after 3 years with no flow. I’ve gotten it every month since. Not always on time but like a few days early, spot on or a few days late. It’s been 9 days and this has never happened. I took a pregnancy test Tuesday and one just now both negative. Am I testing too early? How long did it take you to get a positive after your missed period? How many times did you test?