Anyone go had this happened before

I had my first child Jan 6 2017 and my period came like normal. Then it went crazy and I bleed for months. My Ob/gyn put me on the pill months later and I took it but not consistently. Anyway I had my first normal period in Dec. I came on the 5 and ended on the 8. I ovulated on the 22,I checked my cervix and had the ewcm to confirm ovulation. I had sex on all the right days. My cycle is usually 31 days so it was supposed to start on the 5 of Jan. But it hasn't came and I have took pregnancy test the 6 and 7 both were negative. My cm is creamy and depending on how much it is stretchy. My cervix is low closed and soft. Any advi