Pelvic Floor Muscles

My OB said that my pelvic floor muscles are just awful. I've had 2 kiddos and I'm only 20. I feel like it's affecting my ability to perform sexually and I can't even do one jumping jack without peeing myself. My OB suggested a pessary but all the side effects really scare me. I just can't seem to find the time to do kegels though. Not really sure what else to do. My OB mentioned surgery but there are even more side effects from that. Help?