First of all, when it comes to the stockings, they should be put on first thing in the AM, as this is when your feet/legs etc should be at the smallest. But if they are causing you pain. Then you need a pair for you. I don't know where you are getting them at. However, you should then seek out a pair from a medical supply store as they can a large variety of sizes and will measure you early in the day and you shouldn't get the pain you describe. They are not cheap, generally around 80 or more. But well worth it, as they are fit for you. Since DVT does run in your family, I'm sure you know what to look for. However, if you are unsure I will give you a list of things to watch for. Since this has been going on for 5 weeks and are not getting anywhere with your doctor, you may need to see a specialist. Which you would want to follow up with and if an ultra sound hasn't been done, you may want to request this as well. Just to check the blood flow etc.
High estrogen levels can cause fluid retention as well. I don't know what the levels of your blood results are. You could get a copy of your results and follow up an endocrinologist, as even if some of the blood work comes back in the high and/or low of normal, it can still indicate a problem. I know you also say you haven't had salt in your foods, but do look at the sodium contents of food, especially prepackaged foods, it's loaded with salt. But I would say chances of it being food related is not the issue, especially if your diet itself hasn't changed.
Do make sure to keep moving your legs, as inactivity makes your circulation even that much more harder when exercise is not being done.
Hope this helps and gives you some direction as well.
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