Can you sue someone if they faking a pregnancy. ?

If I understand your question correctly, a woman is trying to pretend she is pregnant to get you to send her money. If that is the case, I suggest...

Can I use photos of celebrities for a magazine if I put a disclaimer?

No, you cannot use the pictures, even with a disclaimer. The copyright to what has been posted online already belongs to somebody else. There...

Given enough time and money, yes, they could find you. I doubt someone would want to go to this expense.

What to do if accidentally use someone trademark?

You can contact the Trademark owner ans ask their permission to use the Trademark.

Your address is a matter of public record. There is nothing to stop someone from posting it on social media.

While they could take legal action, I sincerely doubt they will do so. The cost far outweighs their results from taking action.

Under federal law the liable party is not Facebook but the poster. That is who you would need to sue for your damages.

My picture was posted on the website and the person posted negative remarks can I get my picture down and go after the person

The person who took the picture probably owns the copyright. If that is you (or someone who will help you) you can file a DMCA take down notice on...

If after speaking with him you do not get satisfaction, hire a lawyer to write him a Cease and Desist letter.

What can I do about cyber stalking on Facebook ?

While Facebook may not respond to a user, they will respond to a lawyer. You will want to discuss your situation with a lawyer in more detail....