If you want to play gigs, then do it. It's important to be happy and not let tinnitus get the way of your passion.
You have to be smart about it though, always take precautions and take things very slowly. Start with one gig and see how you feel, then move on from there.
Always wear your ear plugs (or use in ear monitors) when performing live, if you're on a live PA then make sure you have at least -25db of attenuation. If you're doing smaller acoustic type gigs then adjust. Position yourself away from monitors and the drums as best possible. Take breaks if you can. Don't run your gear into the red and distort it to shit like 90% of most musicians and sound engineers tend to do, dynamics are important for music and important for our hearing.
You can also take other precautions and begin to supplement with things like NAC (
http://en.wikipedia.org/wiki/Acetylcysteine), magnesium, B12 and melatonin - there's a bunch more that you can do research into. I would highly recommend using at least NAC and magnesium (avoid the oxide form due to very limited bio-availability) before and after gigs because there's significant clinical data showing that they are very effective at reducing hearing damage. Make sure you have a healthy diet and that you're getting plenty of exercise and sleep. It sounds silly but all these things play a role in how well your body recovers when exposed to loud noise.
If something unfortunate happens (eg. amp explodes or something) and you're exposed to noise that you know has done a very significant amount of damage to your hearing (increased tinnitus, ear pain, hearing loss) - get on an oral course of a corticosteroid like prednisolone as soon as possible. My doctor is pretty trusting of me and I have a script handy if there is ever a huge emergency, definitely helped me out of a couple jams the past couple of years.
I would only really advise against playing a gig if you currently have hyperacusis, take a break until it resolves. It's very rarely chronic and goes away with time, but it's important not to over work your ears because that will prolong it, this is coming from my own experience with it.
Good luck, take things slow and have fun!