What Causes Recurrent Feet And Ankle Swelling?

recently my ankles and feet have been swelling. I have a slight red rash near both ankles up to mid leg on both legs. they do not itch. It is slightly painful to walk when I first start out walking and feels like i am walking on marshmellow. My right foot heal also hurts to walk. My right elbow hurts to extend arm or if I bump it. also the joints in my pointer finger have knots on them as well as the middle finger on the right hand and hurts on occasion I am about 20 to 25 lbs over weight, I am active but for about 8 to 9 hrs a day I have a sit down job. my feet and ankle swelling has been on and off for about 2 .5 weeks. I take 40 grms of omeprozole for hyetal hurnia and several vitamins daily. I also have sleep apnea and use a cpap machine nightly and get asthma once or twice a year but only use medicine for that when symptoms occur. What do you suggest. or what type of Dr is recommended for my swelling and joint pain.