Early period..?? Help..!! TMI

Hey everyone, so my period is due in 6 days..I can almost time it, it’s so regular..!! Well today I started cramping, nothing new around this time..but when I went to the loo I was bleeding..it’s BRIGHT red and really watery..?!

We are trying for number 2 so not using birth control, but not had this before..?! Have attached a picture..sorry for tmi