Hi. 3 weeks ago I had sex with a shemale sex worker. I was insertive for oral and anal. Used a new condom for oral and a new condom for anal, my partner used water lub. The anal act took no more than 10 or 15 seconds. I was afraid of catching some disease and I asked to stop (even I using a condom). Even though I do not ejaculate, I removed the condom and apparently everything was OK, no holes or breakage (as a quick visual check). 2 weeks after the act i got a low degree fever (like 37.3 ~ 37.5) for one day and some nauseas. I think I was a brief stomach / intestinal infection. Is this just have been coincidence or can be ARS?