A penis with a mild twist or curve is perfectly normal. As long as it doesn't have a very sharp twist or curve, it's fine. Additionally, you're only 14... you have years for your penis to grow.
When getting pleasure from the jets in your hottub... be careful that you don't stay in there for too long. If your testicles get too hot for a long amount of time (say, half an hour or so), especially in water that is as hot as a hot tub's can get, you can damage your testicles. So.. keep in mind, it's all in moderation.