Worst day ever!! Need tons of help!?

Okay so I am in the bathroom crying, first I forgot to put on a bra today bec I was in a rush to leave for school and now all the boys are laughing at me bec my show through my shirt. Then when I went to the bathroom I noticed that my panties had white discharge on them and I went back to cl and at lunch I felt weird and went to the bathroom and found not only the left over discharge in my panties but blood!! What do I do? How do I clean my panties? Girls I need someone to cheer me up. Worst day ever.