Feeling bad for you. I hate these types of injuries appearing at the same time.
Short term injuries can quietly suddenly consume our red packs. It is not effective to heal them. When I am suffering or feel that I will suffer a series of injuries, I tend to be more conservative to use red packs. Usually I tolerate the short term injuries unless the injured player is essential to my team. At all times, for injuries with terms >=5 days, I will try to heal them immediately. Otherwise I will consider to sell the player.
BTW, please be reminded that it's near the end of season, more injuries are coming.