What are the signs of a heart attack or stroke?

My mother takes vicodin, blood pressure medicine, zoloft, and several other pills. For a while she either forgets to take her pills or takes them with alcohol. Now the top of her head hurts often, the left side of her face shuts down, and her stomach hurt even after 29 pound fibroid has been removed. Did she have a minor stroke or heart attack and didn't even know? Or is it something else? What can I do to make sure she stays alive and ok? Any advice would help. Thank you!