Gym babysitting room..

I desperatly need to get back in the gym and lose the 30lbs that i've put on 😫 my little guy is 10 weeks tomorrow, and I have not left him yet. My fiance is on my back about putting him in the babysitting room while we workout. (hour and a half TOPS) At what age would you or did you leave your little one in a gym babysitting room?? I kept saying not until he had his first set of shots, but that happened Monday. Im just so anxious about leaving him 😭 and worried about germs. It is a really upscale place and is more than just a gym, its like a ymca. They start allowing at 8 weeks, but I feel like hes so little 😣