ugh! can't wait to phone Drs tomorrow!

So I'm currently on CD98 πŸ™„ 3 weeks & 3 days ago I took a test & it was negative.. having irregular periods is such a ballache... but I've never have a cycle this long before, but I'm from the UK and my Drs won't do bloods till I'm 3months late πŸ™„ so I can't wait to phone them tomorrow & get booked in to see what going off