have you tried "Instead"? Its an alternative to tampons (along the lines of the Keeper) and lasts twice as long - plus there are no strings to worry about or cut off. It takes some slight getting used to but as the brochure said - so did using tampons. I Swear by them and am now a devoted follower after having used tampons for over 30 yrs. They are available at most major durgstores.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"