I used to get headaches when I was younger swimming competitively if the chlorine levels were exceptionally high, look around at the other swimmers, if they are coughing or complaining of similar problems the chlorine levels of the pool could be too high-talk to the pool attendants, look around for pools that have a larger open area above the water, the atomosphere may not be so stuffy. If the pool is too hot for training you may also get headaches, again check out different pools and find one that works for you in terms of temperature. I live in Korea and many of the pools over here are too hot and have too much chlorine, but there are a few that are cooler and great for training.
I also have trouble sleeping if I swim in the evenings because I find the chlorine layer over my skin makes me hot and irritable. What I would be inclined to tell you is to make your showers after swimming long and hot, to open up your pores, also try using a strong soap
(anit-bacterial?
) and shampo to wash as much of the chlorine off as possible, I often have a shower at the pool after training and then again once I get home, it can help.
Another idea could be to take a water bottle with you to the training session if you don't already, many people drink when training on the bike or running but neglect to drink while in a swimming session? You could be dehydrated, chlorine is a toxin that has been reported to promote arteriosclerosis, so don't drink the pool water
(sounds silly
), watch yourself if you are about to gulp and go for the bottle! :-
(
Need any more ideas?....train as much as you can outside in lakes or the ocean
(summer training
) and open air pools. Perhaps you could consult your doctor or look on the net for info on vegetables or fruit that can be helpful in reducing the harmful effects of chlorine, kind of compensators if you get my meaning. I always think prevention is better than the cure, so I don't like the idea of looking for drugs to combat the pain of a headache, though it's your call.
Hope this is of some use and that you don't give up on the swimming, it's too great a sport to do that.
Oh sore obiques could just mean they are a weak link in your armour, following a weight training routine of standing lat pull downs will fix that side of things and improve your strength.