Question!

So my manager had work today made a statement that some coworkers have noticed a body odor that they believe is from the downstairs. I have never myself noticed a problem but I was extremely embarrassed. Needless to say, I plan on calling my doctor just bc I’m a little paranoid now. What are some things I can do to help? I am over weight (and working on it) I’ve also hurt that different fabrics if underwear and can cause you to sweat more? Just any hints and tips would help!