Hi Carol. You sure do go through lots Sweetie. I taught CPR for a while which included the heimlich manuver. I found a good link with photos and detailed explanations
What's really important for you is there's a method of performing the heimlich manuver when you're alone.
Self treatment with abdominal thrusts: A person may also perform abdominal thrusts on themselves by using a fixed object such as a railing or the back of a chair to apply pressure where a rescuer's hands would normally do so. As with other forms of the procedure, it is possible that internal injuries may result.
Personally I've always doubted this works, but when you're alone and in trouble anything is worth a try. You may want to print stuff from this link and keep it in a handy place. Love Ya! Donna