Messed up from pill

Hi Everyone! I am new to this...I come off my pill over 6 weeks ago as me and my husband are TTC. Had a period soon after stopping my pill however nothing since and the app is telling me I’m 6 days late! Took test and is negative! (As I thought) I am now stressing that I have been on the pill for 10+ years that my periods will never get back to “normal” I’m trying to not stress about it or put pressure on myself however how can you not 😩