It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) had himself cupped while in the state of ihram because of a pain he had, and he also used the tooth-stick (miswak) while in the state of ihram.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11452