Treatment is with antibiotics for three weeks. Usually there are no lasting effects, as long as the infection is treated early enough.
You will be advised not to have sex (even oral sex and sex with condoms), until after you (and your partner) have finished the treatment and you have no symptoms. It’s really important that you don’t have sex with your partner before they are tested and treated as you could become infected again.
You will be asked to return for another test after your treatment to confirm you have cleared the infection.