B.C. to Ring transition

Solana
Hi guys, 
I've been taking BC pills for 8 years non stop and I stopped about a month ago. I got my period perfectly after stopping the pack. But I'm waiting for my normal period to regulate before switching to the ring. 
I'm 22 days late now. (Took a pregnancy test and I'm negative. Also been using protection.) is this normal? 
I'm a little anxious. Has this happened to anyone before? Thanks