I sympathise with you.
Phos 3C should work, and at that low strength you could take 1 per hour until it works or until you have had 6 to 8 after which you could stop. You can also have a topup one or two if it stops working the next day or later. It is also excellent for stopping bleeding.
For pain and healing, you could use Arnica any strength up to 30C, if possible every hour for about 4 hours prior to stitches, tooth-pullings etc, and then for around 4 or 6 hours after the event, one per hour, but stop when it starts to work. You can take this with the Phos.
Together with the Phos and Arnica, you could use Hyper any strength up to 30C (Hypericum), every hour as well, until it starts to work, or stop after about 8 doses and take a break for a day or so. Hyper is excellent for very sharp pain from a damaged nerve, and usually calms it down a lot within a few hours.
These 3 remedies work well together, but in some instances, other remedies can neutralise each other's actions.