OMG!! I am sooo nervous! Crutches!! HELP?

Okay I have screwed up my knee some how and the orthopedic doctor said it would be better by the middle of Feburary (2mths after injury) and I asked him "What if it's not?" and he said "don't worry they always get better" So I am like okay. I have been resting my knee and the middle of February comes and my knee all of the sudden gets all painful and swollen and inflammed (like clockwork) so I went to my general care Doc and he said "oohh just give it time" while I am thinking in my head I've given it two monthes. So my Dad and I talked it over and he said "time to take matters into our own hands" so went out and bought a pair of crutches and I am going to stay on those for at least two weeks and let my knee rest and not walk on it. But I am NERVOUS FOR SCHOOL!!! I have made the crutches comfortable for my arms and adjusted for me but I feel so helpless. Any suggestions on anything!!! I am SOO NERVOUS! How do I not look soo y?