hi mate, i found that when you run and swim everyday it eventually takes its toll on you and can burn you out. The best way is to run 1,5 to 2 mile 2-3 times a week and swim twice a week, it helps your body recover.
I would say stick to 3-4 times a week, include some rest days as Charlie says they are important. I often worry I am doing too much with too little rest so I try to make sure I have plenty of lazy time. Currently since starting up running again im running twice in the week and twice on the weekends which as a total ends up being about 3 hours of running since the two in the week are 30 mins each and the weekend runs are for 60 mins each. I think that its doing me pretty well so far but soon ill have to test myself on some distances to get a measure of where I am. So just mix it up a bit and allow adequate time to recover.
i always find it really difficult to force myself to have a rest day, as you get more and more motivated to train and feel yourself getting fitter, you feel guilty for having time off, but i always end up overtraining and having a week or so off tio recover, i guess everyones different but you definately need some time off every week, even if you spend the day walking.
yeah i feel the same, im on a rest day at the moment and i feel i should be doing something, and the most annoying bit of it all is that i started to really enjoy my training, as i finally found some sort of routine that works for me and that i will follow