Anyone with OCD should get blood tested for strep. Two blood tests are required ASO and ADB, Antibodies to strep cause inflammation in the brain which results in OCD. Get tested.Guildford Pathology Clinic carries out the tests. Other places will as well. Read the book Saving Sammy.
I know someone who after being tested had a strep titre of 400, and was prescribed 1 week of azithromycin (antibiotic) as well as prophylaxis penicillin (250mg BD) to prevent being reinfected. Penicillin needs to be continued for a very long time. Possibly up to a decade. Read about PANDAS. This can affect adults as well. There is hope for all of you who feel desperate. Get tested.