New to TTC

Lindsay
Hi Everyone!
I just got off BC with my last period on Jan. 11-15. My next period should have started on Feb. 8, but GLOW said it would start on Feb. 10. It's now Feb. 11 and I still have not had my period. I took a test on Thursday morning and it was a BFN. Should I take another one so soon? How long did it take your cycle to get regular after getting off BC?  Thank you!