I'm so sorry you're going through this—it sounds incredibly painful and stressful. You're absolutely right to feel concerned, especially about the bruising, sensitivity, and the sharp shard left behind. While bruising and swelling can sometimes happen after dental trauma or extractions, a yellow-purple bruise and prolonged sensitivity to all lower teeth might indicate something like lingering inflammation, tissue trauma, or even nerve irritation.
Definitely call the practice manager tomorrow and explain everything in detail. Insist on being referred to someone who can see you sooner—waiting until February 10 is too long, especially with your symptoms. You could also try calling a dental hospital or an emergency dentist for advice, as they might be able to provide interim care or at least some reassurance. Regarding the shard, it’s often best to remove it as it could cause irritation or prevent proper healing—“healing over” doesn’t seem like a sufficient long-term solution. If you feel distrustful of your dentist, seeking a second opinion or changing practices may be worth considering for future treatment. You deserve proper care and peace of mind.