I agree with Teak. You risk is close to zero. The mouth is a hostile environment for HIV. There are enzymes and other components of saliva which make it a difficult place for HIV to survive. The quoted figure for HIV risk, if one has or receives oral sex with an infected partner is less than 1 in 10,000 and, in my estimation that is too high. Some experts state there is no risk at all from oral sex. Neither of us on this site have ever seen or reading the medical literature of a convincing instance in which HIV was passed by oral sex. This includes by all of the people who had gum disease, sores or bleeding in their mouths, etc.
Sorry to hear you have a cold and that is what it is likely to be, not HIV. If you choose to get tested for HIV, wait until sex weeks after your exposure and then do so realizing that you are doing so for peace of mind (as I said there really is not reason for concern) and commit to believing the test results, which I am confident will be negative, when you get them.
Hope this helps. EWH