I read your question and I understand your concern. Usually a stroke has other signs apart from facial weakness, like weakness of the limbs on one side, vision problems, balance problems etc. Facial weakness alone can also be a result of stroke, but since you describe it to involve the whole face more probably it is a peripheral facial nerve palsy (Bell s palsy) which involves the whole face including the eye and the forehead, while in stroke it usually involves only the lower part of the face. However since you say you have a history of stroke making you a high risk person, I think that before jumping to conclusions a neurological exam is necessary to search for other possible signs. I hope to have been of help.