Cheating Wife

I know my wife has been cheating on me for several months now. She thinks she's sneaky and that I don't know. I own a gym and spend at least 12 hours a day there working and training members. It's hard to find people to work these days, so the gym takes up a lot of my time. I thought about hiring someone to get me pictures and details of her affair for a divorce lawyer. She meets her lover twice a week when she is supposed to be going to night school. She's been cold toward me lately and we haven't been having sex. I have found a way to give her yeast infections and urinary tract infections while she's asleep, and I'm sure she thinks she's getting them from her lover. She has been to her doctor several times and prescribed meds, but the infections just won't go away. When she stops seeing him, I'll stop the infections.
Then the separation papers will be served.