Do you eat a lot of sugar or carbs? These can cause you to retain water and make you feel like your hands and feet are puffy. If you eat these things, try avoiding them in for 3-4 days and you'll see you'll lose several pounds as the body lets go of the excessive water. Also, if it's hot where you live, you can easily retain water from the heat. All these things can make your hands and feet feel puffy even if they don't look really puffy. Trust me, I puff up like a balloon when I got into the heat.
I had an EKG done about 4 years ago because my heart was doing flips flops. Always happened in the evening just when I'd finally sit down to relax, and my heart would do this weird off beat. Extremely scary, particularly to somebody who has HA. Turns out this normal and very benign. It can also be triggered right after you eat sugar, and it often happens just after you relax, especially if you've been under a lot of stress. The cardiologist was quite nice to me and reassured me that my heart was strong and healthy.