so i'm an oboist and i play in the pit for marching band. this is my third marching season in the pit, and the part given to me is a 4 mallet part, so i learned how to play with 4 mallets yesterday. my index fingers are hurting and are swollen. i figure the hurting is fairly normal because it's mostly from the mallets rubbing, but is is normal for the bottom joint of the finger to be swollen? any tips? thanks!