lemm, i would like to be able to help from here, but really there is nowhere near enough info of the kind needed for a homoeopathic prescription.
It would be the best to get a recommended local healthcare professional -homoeopath or cranial osteopath or cranio-sacral therapist - onto this case right away. it is the kind of situation that can leave a person with lasting consequences if not treated in the present, even though it will likely resolve itself as an acute situation within a few days.
all the best, Anna