HIV Saliva?

[epj290]

hello.
im really worried so i decided to post here.
So i was in a bathroom ( in college library) and i really had to go could not hold it in, went to the bathrom and then i saw in the toilet seat what looks like a spit with like mucus in it kinda light brownish...so i took a bunch of toilet paper and wiped it off without it touching my skin fingers. Then i took some more toliet paper and wiped over the same spot again. Then i sat in it to go to the bathroom.
Im just worried that maybe it could still be some type of hiv or something in the toilet seat when i sat in it even if i wiped the saliva off, i don't have cuts in the area that sat on it as far as i can tell and there seem to be no blood in it. am i at risk or am i just WAY over reacting.? any input will help.