I have a super embarrassing moment im trying to get over help!!?

Omg im so freaked out!!!!!!!!!!!!
Im 15 and am in grade nine first year of high school here in Ontario!!
Anyways i was at school today and im kinda failing science so i went to see one of the guidance counsillors Mr. Whitlock at my school! Cause he is helping me try to pass!
Anyways i was in there for about 45mins and when i went to stand up there was blood all over the chair i was sitting in, in his office!!!!! I was like **** under my breath and sat now quick!!
And he said everything okay??
And i said no!!!
And he said whats wrong?
And i said um i hope your not mad at me but i kinda started my period and its all over the chair and my capris!! (they were white!!!)
He said Oh and gave me his sweater and told me to go to my locker and get my gym shorts and asked me if i had any pads or tampons and i said no cause i wasnt expecting my period!
and then he said okay i will go get you one from the office!!
So i put my gym shorts on and went back to student services and he gave me a tampon

i gave him back his sweater which was white and said sorry and he said no problem dont worry about it!!
Omg im so freaked out! I have to go back to see him tomorrow about science and im really embarrassed about it!!!
(he is pretty young like in his late 20)
so what do i do??????????
thanks!
Jenna

It might be awkward but dont worry about it.
Also, a tip from degrassi, Dont wear light colors when your near your period. and carry tampons in your purse at all times, even if youre not on your period, your friends might need one.

Just dont mention it. and just be straight about science. Dont worry about it

just make a joke about it, im sure he knows your embarassed, and i bet he is almost just as embarassed to have been there, if you just pretend like it never happened it will eventually come up later and be even more awkward
just say, sorry about all that, it was really embarassing....i like the new chair though definitely fits the office well (something like that)
good luck

Oh Sweety its okay! Embarresing stuff like that happens to everyone at some point. When you walk in tomorrow just say, "Hey I'm sorry about yesterday, that was very embarresing." And I'm sure he'll say don't worry about it and then move on!

It's ok sweetie, although it was really embarrassing, he is an adult and knows that stuff happens. I'm sure he hasn't even thought about it after the fact. You will be fine tomorrow and he won't make you fe