I've Been On My Feet Canning All Day, But Have

I've been on my feet canning all day, but have only had swollen feet and ankles like this when I was pregnant 15 years ago with an almost 10lb baby who was 15 days late. I'm also experiencing phantom sensations in my feet, ankles. Itchy skin around my hairline, arms and lower legs. I'm 47 and in reasonably good health.