Hi, I read your query. I feel you should have provided more details regarding your symptoms of OCD. Were you diagnosed by a psychiatrist or is it your self diagnosis? Secondly, I would like to know what actually are your thoughts regarding the feeling that you were struck with a needle. Were you worried about contracting any disease? You seem to be suffering from some anxiety disorder. You should consult a psychiatrist for your symptoms. In case you have OCD, you will benefit from treatment with selective serotonin reuptake inhibitors like fluvoxamine. In addition treatment with non pharmacological methods like exposure and response prevention will help. Hope this information was helpful. Best wishes.