Does obsessive compulsive disorder impair judgements?

i come up with ways to embarrass myself, which i don't want to happen
a few years ago, my grandma who i lived with for a long time, asked me if i did anything she didn't know about
i told her no, not thinking about masturbation when she asked
if i was thinking about it and said no, then is that lying
cultures differ from countries to countries, but now im wondering because im korean, if i lied and if i should tell her now
i asked on yahoo about things related to this and now im depressed that because im korean if the answers that relieved me will change and if i have to ask all again saying that im korea to relieve myself
i think i came up with this idea of wondering if the answers will change because of the racism
my thoughts are getting complicated and depressing me more
my ocd is to do with guilt rather than the common rituals the ocd'ers do
do i have anxiety disorder too and do i sound crazy?
i try to embarrass myself and have repetitive thoughts

i have repetitive thoughts most of the times about my guiltiness and what im proud of

I think it's OK to lie about that issue. It's a very private issue. Your grandma doesn't have to know. It's OK if she doesn't know about this. Just like she doesn't have to know what you wore 3 years ago. It's not important. So don't worry.

It's sounds like you have just obsessive thoughts and not compulsive. Try not to stress yourself out too much. Try to not think about your problems.

Make sure you get PLENTY OF REST. This will help you deal with your anxieties. If you constantly think about repetitive issues, it's sounds like your stuck in a brain lock.

You're not a bad person because you have these thoughts. You might need to see a psychiatrist about this issue.

I would stay away from too many sweets and caffeine during these bouts.

Do your parents/guardians know about this? You might need there support. Medication can help you. It's OK if you need medication.

I used to be a health professional. Good luck.