i had quite a bit misfortune myself last season. 5 injuries in not even a week. i had to sell 1 player who was out for 15+ days or something .. broken shoulder.. totally useless for the rest of the season. it sucks sometimes. after that period i went a while free of injuries and saved up about 30 treatments. if i have a player injuried i don't immediately spend treatments on the guy. i save 'm for important matches. 'till now .. they start breaking again like glass again and just before important cup matches
if life deals you lemons make lemonade. if life deals you tomatoes make bloody maries. imo (after 3 months of gameplay) i feel the injuries are somewhat a pain but all in all not exagerated. i hope your luck turns soon mate!