When you say 'you lost control' are you referring to urine, that you leak, or are you referring to
orgasm, that you can't hold back. If it is urinary leaking with coughing, sneezing, running, etc, than doing both the slow and the fast kegels should help. if it you are referring to orgasm/climax, then you need to do more relaxation exercises: breathing with pelvic floor relaxation, rather than tightening the muscles more. Your muscles and nerves may be experiencing hypersensitivity, so you need to calm them down. My book goes over some relaxation techniques.