Confused on cycle.. Help?

Kassie
Hi, I am new to the group! My husband and I have decided to start trying for a baby about a month ago (September 14th). I was on birth control for about 7 years. The birth control (camrese) made me have a period every 3 months. Well 4 days (September 18th) after stopping I got a period/withdraw bleeding which ever it was (have seen both answers online), it lasted 5 days and it was like a normal period. After that was over I have really started checking my cervix and CM. Well there were times I thought I was ovulating and of course baby danced like every other day even days before and after. My cervix was where it was suppose to be during that time. Well i was "suppose"to start my period around October 18th well nothing yet and it's the 4th day. My cervix is still high where are I can barely reach it and it is probably about medium open wise. The CM is white creamy. About 2 weeks ago I had a cramping sensation not anything painful like a menstrual cramp, cramp lasted about 20-30 sec. I Had headaches about 2 weeks as well. And now I got this cold that has lasted about 2 weeks. I have also been gassy such as burping wise. And I have never been this way before and it's like every time I get done eating and drinking literally like 10 mins afterward and it doesn't stop for a while.  I want to know is any of these related to me being of birth control?? I'm so confused because I thought when the period was coming your cervix was suppose to low. And usually I can tell when I period comes I have bad cramps off and on the day before and the night of. And I was regular before birth control. I just started the 3 month cycle birth control about 2 years ago and before that I was on one that I went every month. I took a pregnancy test ( clear blue digital advance) yesterday afternoon and it said "not pregnant" but idk if I took it at the wrong time of day and also I might of peed on it too much and might of been too early?? Help!!! And if I did take the test to early when should I take it again.