Dental Dams

I'm a lesbian. So I'm not so worried about getting pregnant. I do practice safe sex though because you can get an STI from anyone. I only have sex with people I know are clean and I always use condoms on all my sex toys and sterilize them after. But I wound up with Chlyamdia recently. I went to the doctor and had it treated and I'm okay. But she recommended that I start using dental dams when I sleep with women as an extra percaution because it can be spread by mouth