Anyone had a spigelian hernia?

I was at my surgeons getting a fill last week and I asked him about this pain I had been having in my lower left abdomen. He said it sounds like a spigelian hernia, and that if it is painful enough to interfere with daily life, that I should let him repair it. I r3eally don't want to have another surgery(even though it is a same-day procedure, done laprosopically), but I'm afraid to just let it go. I asked him if it was okay to still exercise, and he said as long as it doesn't hurt. Well, I was at water aerobics that night, and boy did it hurt!! It doesn't hurt all the time, but if it is going to interfere with me exercising, then I think I should have the surgery, right? I was just wondering if anyone else has heard of this kind of hernia, or had one.