Hello aili,

To reduce pain and haemorrhage, take one dose of Arnica 200c (or 200k) and one dose of Hypericum 30c (or 30k), both twice a day (morning + evening) for one day prior to procedure and approx. 5-7 days (as necessary) after procedure.
Also take one dose of each remedy half an hour for procedure.

If there`s a known tendency to bleeding take (additionally) Phosphorus 30c (or 30k) in the same dosage.

It`s possible to prevent infection if you take Pyrogen(ium) 30c, twice daily postoperatively for 6-7 days.

A mouthwash to reduce pain and promote healing can be made from Calendula mother tincture or lotion. Place 30-50 drops in approx. 500 ml of distilled or boiled cooled water and rinse (postoperatively) a few to several times times a day for a few days. You won`t need the other mouthwashes you mention in your post and yes ....they may antidote the hom. remedies !

Wim

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Homeopath for people and animals.
(Sorry, Wim no longer works here.)