Truvada is an extremely well tolerated drug and the side effects short term are close to none. Virtually everyone who takes it experience no side effects, and the few that do they are mild and go away in a week or two. This is a conclusion from placebo controlled studies, not from some random anecdotal evidence.
As a word of caution, the side effects on of taking this long term on HIV- guys are pretty much unknown so if you can it's really not a bad idea to get month long breaks from it and adjust your unsafe behavior accordingly. There seems to be some association with mild Bone Density Loss but doesn't seem to be serious for some people. It's also very important you do this under doctor supervision so they are always checking your liver numbers are ok.