Trying for number 2!

Tamra • Hello, I`m happily married to my best friend David for almost 4 years. We have a son, Liam and we are trying for our 2nd
Well my husband and I decided to try for baby number 2 and I would have thought I would be pregnant right now but I took 3 test and all said no and I started my period early? I know this is the first month that we have started trying but I've always gotten pregnant pretty fast if we tried. My first pregnancy I had a miscarriage with my twins,  My second pregnancy went great we have a son. Am I being paranoid?