First Of All I Am 54 Years Old And A

First of all I am 54 years old and a female. I have been in perfect health, perfect blood pressure, perfect cholesterol, perfect blood work all levels perfect. I noticed a few ago that suddenly the inside of my left ankle only the inside got swollen so bad that I couldn't see my ankle bone on the inside of that ankle. Other ankle perfect. This was accompanied with a large bumpy rash on my right arm and I felt nauseous. This lasted for about 24 hours. I noticed this particularly happen after I eat meat, or use extra virgin olive oil to cook with or if I have Italian dressing on my salad. I can't seem to digest meat and fats properly. I also noticed this happens if I have soy sauce or anything with high sodium content . I eat my 6 servings of fruits and vegies religously every day and I only weighed 120 lbs. at 5 foot 3 inches even after having 4 kids, but all of the sudden I gained 10 pounds just this past week, I'm guessing possibly water weight from this water retention problem? Anyway I have to go to work right now or I'm going to be late, I. will await your reply when I get home late tonight. I just started the late night shift at Walmart a couple months ago. Thanks !