Worried Just Want to Be Realived

hey im 17 and about 6 months ago i had stupid unprotected sex with some 1 who they said might have chlamidya later on i felt like i was having diahrea and my but would burn if i pushed to hard then my testicles started hurting from time to time so i got a chlmidya test and it came up negative but my testicals still kept hurting from time to time and i still felt like i was having diareah then i was worried it might be something else so i got tested for aids and it came up neggative and that was like maybe 3 weeks ago or so meening i tested like 5 to 6 months later from wen i had the sexual interaction and the test came up negative i still feal like im havin diareha and my testicles still get pain from time to time and time to time wen i have diarhea if i push to hard it burns also like 2 days ago i felt like my foot was hurting for no reason and i didnt rember hitting it but the pain went away is it possible to have symptoms while results show up negative and wat stds should i get tested for again from the symptoms i have wrote? also should i test for aids again even though it came up negative 3 weeks ago? and also can u get hiv from 10 seconds of oral sex? who ever answers thank u veryy much for your time and it is appreciated