CD 36 No BFP

So as the title suggests I'm currently day 36 today. Glow keeps flashing at me saying my period is abnormally late and to log it. But I can't as I'm not on yet.

I have 3 negatives tests and usually start between 28 days and 31 days. I'm getting very emotional as this time last year I was pregnant and lost it on my birthday in February.

I did have my covid booster jab on 18th December a week into my cycle. Could this have had an impact?

My gynaecologist told me Monday I had extensive endometriosis and a 4.1cm cyst on my ovary which may potentially stop me ovulating from that side. If that was the case surely I'd still have a withdrawal bleed?

I just want to come on if I'm not pregnant as I'm going away next week 😩 . Anyone been this late before?