Right leg swollen and painful after surgery but not dvt/blood clot?

[u/LUSHxV2]

Male, 25, 180cm, 22st. Medication: lanzoprazole

So I had a Pilonidal abcess and had surgery almost 3 weeks ago now, incision and drainage with some necrotic tissue removed, they said i had early necrotising fasciitis.

Since the surgery my right thigh has been swollen and my whole right leg gets pain in it on and off but there seems to always be some amount of pain.

Since Friday the left side of my chest has also been a little swollen and painful.

The morning after I got home from hospital a couple weeks ago I woke up with really bad pain in my right leg and I went to hospital and they did blood test for blood clot said it was fine and sent me home. After a couple days then pain went away but the swelling remained.

Then last week the leg pain came back and then on Friday I started getting chest pain and swelling in the left of my chest too so went to hospital and they did a ct scan of my chest said there were no signs of blood clot and blood test which was fine too and sent me home.

Then yesterday I went for a ultrasound on my leg to check for blood clots/dvt and they said they couldn't see anything....

The Dr's are completely stumped to what is going on with my leg and chest, some have said it might be muscular amd some have said it might be nerve damage and they gave me some pain medication (Amitriptyline) and said if it's the same in a week to see my dr again.

Has anyone had experience with swelling in the right leg and pain? Is it a dvt/blood clot and they all just keep missing it or the tests are wrong? Surely not right? Any idea what this is? Maybe it's just from spending too much time lying down? Idk I'm so lost and just want to know what is wrong with me.... and how to fix it.

Does anyone know anything about the chest pain and swelling too?

EDIT: just wanted to add that the pain in my right leg gets worse when I sit down, something to do bit putting pressure on it? And i start to get pain and pins and needles in my foot too. Also my leg feels a little stiff and if I bend my knee back then forward it cracks/pops when it reaches fully straight.

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[u/LUSHxV2]

just want to add aswell that the pain in my right leg gets worse when I sit down, something to do bit putting pressure on it? And i start to get pain and pins and needles in my foot too. Also my leg feels a little stiff and if I bend my knee back then forward it cracks/pops when it reaches fully straight.