my girl friend had a bad sinus infection and i was wanting to know if she got a steroid shot or antibiotics. she says that when she got the shot it burned and could feel it go through her body. reason i want to know is because she is on birth control and i am worried that if it was antibiotics it could affect the birth control. she told the doctor that she didn't want antibiotics because they don't work for her and she said she told him she wanted a shot.