My periods is late but I know I’m not pregnant

So for the past couple years my period has been very routine it’s always come on the first of every month and lasted till the 7th I did have a freak month last year where it didn’t come at all for 3 months until it started back again like it never left on the regular schedule well it’s currently 10 o’clock on December 3rd and it still hasn’t come yet I’m getting a bit worried because again it’s always been super regular I know for a fact I’m not pregnant with the pandemic my boyfriend and I haven’t been able to get the chance to have sex since last may so it’s impossible I’m pregnant and I’ve noticed that there’s not any discharge either even though there’s usually a lot of it right before my period and there’s also a strange oder that’s not normal and I’m getting a little worried I might have an infection what do you think it could be?