Lipitor Docotr, Fish Oil, Leg Pain, Daily Basis, Singulair

My husband has taken Lipitor for many years. Just 2 months ago he experienced some muscle pain like perhaps he had stretched one too much. Then his leg starting swelling. We went to the doctor and he sent hime for an ultrasound. They said his veins are fine and there was no clot. He still has soe pain and the swelling. I was watching TV about a month ago and saw the ad for Lipitor and its side effects and it said "leg pain and swelling" It hit me that the Lipitor was probably what was causing his problem. he called the doctor again and he said to problem with stopping it but to take fish oil daily and to increase his fish eating. Now 3 months later he still has some leg pain and his leg swells ona daily basis. Anyone know how to get the swelling down? Also, when we looked up the side effects we saw a bunch that apply to him. He no longer takes Singulair for his breathing as that problem has stopped.