Has this happened to anyone else

So umm I think I'm 11-12DPO Offically 1 day late for my period which is never late has only been late when I am pregnant !! My cycle is very regular with and it usually being 27 days long here it is day 28 and still no period and two negative test one last night and one this morning this is starting to freak me out!!! So has this ever happened to anyone and they were still pregnant ??? Just need some advice this is my tea from last night 😩😩😩 excuse my dirty nails had just gotten off the grill