Someone please help

I’m really not sure what to do. Ever since I’ve had my period I’ve had it on time and regular. Even after my son 9 months ago I got my period back at 7 weeks pp and it’s been regular ever since.

So my husband and I decided to start ttc the beginning of June. My period was due the 29th and still haven’t gotten it. No cramps, no bloating, nothing. I’ve been testing every couple days since 12 DPO and not even a faint line. I took a clear blue digital last night and it was negative. I’m not sure what to do. I’m okay with not being pregnant, I just am really confused about my period being late. Had anyone had this happen? Did you get a BFP days after your missed period? I just want to know what’s going on