HI well come to Hcm.
Since your BP is172 over 116 is quite high, dropping the face on rt side if not bells
palsy it could be due to upper motar palsy of lt side of facial nerve palsy
devoloping CV stroke
, No point bringing down BP only you got to consult your doctor
immediately and if advices submit for Ct brain immediately. You should not wait this
advice is on history base only clinical examination will give final conclusion. Thanks