Dislocated toe problem?

Well a fortnight ago I was dancing and my toe that's next to my 'pinky' toe went snap and just sorta gave and I could feel the middle of it just sticking into the ground (my dance teacher had popped it back in almost straight away) I also got light headed and went really pale too after about 10 minutes. I went to the chemist afterward and I got some ibuprofen for the swelling. It's was bruised all around my toe and surrounding areas of my foot. It still hurts and swollen. Mum told me to stop strapping it a few days ago, but I reckon I did something to it because the following Tuesday, Thursday and Saturday I had dance competitions and my friends watching said I was all wobbly when I was doing stuff on that foot. I've been told it's dislocated but it looks really bad and I wanna know if I should still have it strapped and for how much longer. I have the school cross country which is like 2k in retarded terrain next Thursday and on top of that I walk to and from school too.