how much you swim it? If you swim in a club and a reasonably good relationship with your coach you ask him a look as he sees it, he will send you there already able to give an informed statement.
Then change your feeling. You have normal weight (BMI 23.5), which also mainly consists on top of muscles.
If you wanted to lose weight, which would only have a shrinkage of muscles. Oh great - then you weigh less, but your body fat percentage increases. That would be something of unhealthy ...