Welcome to the forum. Thanks for your question. Your English is fine!
The important information in your question is your negative HIV test results. They prove you did not catch HIV. The exposures described were zero risk. Some of your symptoms could occur with HIV, but also with many other minor medical conditions. However, test results always overrule exposure history symptoms. To your specific questions:
1-3,6) These are all zero risk events. HIV is not transmitted sexually unless a bare penis (no condom) enters another person's vagina or rectum.
4) I do not know the cause of your symptoms. Your test results prove they are not due to HIV.
5) Yes. All existing HIV blood tests are conclusive by 9 weeks. Perhaps you have read that 3 months is conclusive, but that's old news. For more explanation, see the thread linked below:
http://www.medhelp.org/posts/show/1704700
7) No more testing is required.
I hope these comments have helped ease your fears. Best wishes-- HHH, MD