Swimming causing issues 😫

Since its been so warm my son and I have been spending more time at the pool. I don't know if it's just being pregnant or what but I have had more problems with itching and burning then I even have. I have been treated for UTI, bacterial infection, and now they think maybe it's turned into a yeast infection. I'm about to go crazy because between itching and being 23 weeks pregnant I am getting absolutely no sleep. And that's not good trying to keep up with a 4 year old all day. Any advice on things to try? Anyone else having these issues as well?