This is Dr. David. I am reviewing your question now and will be with you momentarily.
you could be having siatica related pinched nerves in your lower back which can cause pain in your hip which radiates down into your foot.
severe arthritis or tendonitis or bursitis in your hip can also put pressure on nerves and cause pain which can radiate down into your foot.
how old are you?
have you had problems with arthritis or slipped disks in your lower back before?
do you have a GP doctor who can see you and do some xrays and examinations or better yet, MRI scan of your lower back to check for pinched nerves?
weather changes and colder weather can worsen arthritis and bursitis symptoms.
DVT would not cause your type of symptoms
DVT is also rare in your age of 22
DVT would tend to cause pain and swelling of one leg like calf swelling and pain
it doesn't sound like you have swelling in your leg.
those are not signs of DVT.
sitting down would take pressure off of your hip joint and ease pain for arthritis or tendonitis or bursitis.
it doesn't sound like you have a DVT.
you can try to ice your hip and do more stretching exercises
also you can try over the counter anti-inflammatories such as ibuprofen or naproxen sodium to help decrease inflammation in your hip and see if those help
let me know if you have other questions.
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painful swollen hip would not be from a blood clot
it would be from arthritis or bursitis of the hip.
yes, you should take some pain killers with food in your stomach (never on an empty stomach)
and try some ice packs and heating pads on your hip as well which could help.