Thanks for posting your query.
How long after you had tested for HIV? Is it after May 12th 2012 and if the same is negative then you need not worry about HIV. Otherwise have another ELISA
or Western blot test and rule out your fear of HIV.
Your symptoms of skin rashes and weakness and sleepy feeling may be due to something else.
You can approach your physician and get cleared about your symptoms.
If you are further worrying about that somebody had injected with HIV, Hep A,B,C blood then you have to meet a psychiatrist
also to remove your ideas from your mind.
Get well soon.