Last MS was in January. Im 27 years old, I had my tubes tied after my 2nd son (march 2015) and after that my periods have been regular on time no problems. Well its Now the end of March and still no period. In Feb I had 2 days of very very light spotting. I took 3 HCG tests in Feb came out Neg. Haven't taken one since...Not sure what to do? Called my OB/GYN seems they don't think its a big deal...a little strange but not a big deal. What do I do?