Cycle day 42 with no second period after stopping birth control

Ky 8-15-17👼🏼 & 10-28-17👼🏼 Pregnant with my🌈💕
I am now on cycle day 42 with no period. September 20th I started taking birth control. I quit taking birth control in January after I finished my pack for that month to see if I am regulated yet. Then February 7th I got my first period after being off of birth control. I should have gotten my second period last friday/saturday but still have not gotten it. I had symptoms like I was going to get my period last week (mild cramping in the abdominal region and near belly button, gassy, slight pain in breast, and my body felt really warm) but it never came. I've also been having milky/creamy cervical mucus. I took a pregnancy test thursday evening and it was negative. I don't understand why I got my first period after being off of birth control on time. But now I still have not gotten my second one??? And I'm on cycle day 42. I just wish my period would come so we can ttc already.