I'm not sure why you think your rash has anything to do with HIV but if you're concerned about a rash why don't you have this medically treated? Aloe vera isn't a cure. This may simply be "jock itch" (i.e., a skin fungal infection) which can be treated with over the counter medication.
Oral sex (both giving and receving) carries an EXTREMELY low risk of HIV transmission.
The statistics we use for unprotected oral sex are .5 to 1 per 10,000 exposures with a source KNOWN to carry the virus.
Your risk would be even less since you cannot confirm your partners status.
Your risk from PROTECTED vaginal sex (assuming a latex condom was used accurately and did not break or tear) is absolutely zero. The virus cannot cross an intact latex barrier (again, assuming your partner was HIV positive.)
Sucking nipples carries NO risk unless you happen to be an infant and you're continually nursing an HIV positive mother.
While there was no need to pay all this money for all these expensive tests, they have clearly shown that this event did not...and could not....have left you exposed to HIV.
Keep in mind that there can be "false positive" test results (i.e., testing that picks up antibodies that are similar to those seen in HIV but are not). Thus, the general rule is that a positive ELISA screening test needs to be followed by a second test, known as a Western Blot.
If the ELISA is reactive (positive) but the Western Blot is negative, the person is said to be HIV negative and the first test was a false positive result.
If both come back as reactive/positive, then the next step is to make an appointment with an Infectious Disease specialist who will likely order further tests to determine if/when medication should be started.
Interestingly, there often is no need to start medication in early stage HIV. Keep in mind that any medication does not cure the disease but rather works to slow/avoid the progression of HIV to the last stage of the disease (AIDS).