What's causing swelling in my fingers and toes?

Today I was carrying an ice chest and usually when I grip things for long periods of time my fingers swell. If i do push ups on a hard surface my palms swell also when I wear flip flops my middle toe swells. When I stand for log periods of time the heel of my foot hurts and causes the area to swell. There is no way I can wear high heels because that will cause my whole foot and toes to swell up. When the swelling begins the area hurts, skin is stretched and it itches. It usually happens after I've done something with my hands or wore the wrong kind of shoes. It takes a day for it to go away I usually just take an ibuprofen, but that really doesn't help. The itchiness and stretched skin is really annoying and uncomfortable. Anyone have any idea what this could be?