Hi there ~
I understand your condition. I think that you might have a problem with genital hygiene since you describe your work to be very hard cumbersome and sweat a lot. I believe there are medications that can help cure your infection, and a consultation with a sexologist
or a local doctor will help with the medications needed. I also believe you should look up good genital hygiene and keep the area dry and clean to avoid any such infections in the future. If you have a girlfriend it might be good to have you both tested for UTI/STIs and see if you have a urinary tract
or a sexually transmitted - infection which can also be treated.
I hope this helps. Take care and have a lovely day!