Sciatica is herting my left hip .pain is down the hole leg lots of pain in calf with some swelling.im a large man 280pounds 6.3ft .i limp every where its killing me any thoughts?

Advice: Stay active but don't overdo. Avoid situations/movements known to hurt/aggravate your pain. Try to do light stretches, preferably after you have warmed up your back if heat is helpful. Antiinflammatory medications such as ibuprofen/naproxen are mainstay of therapy. Occasionally, stronger medication such as tramadol or hydrocodone may be used for severe/breakthrough pain. Takes ~ 6 weeks to improve.

Make sure: First you need to be evaluated that this is not a blood clot as calf swelling typically is not associated with a sciatica and a DVT or deep vein thrombosis or blood clot can mimic sciatic like symptoms including the pain with walking and a limp. Get checked now.

Pinched Nerve: Sounds like you have a pinched nerve in your back. I would suggest seeing a pain/spine specialist to evaluate you further to evaluate what level and what can be done to treat you. There are interventional treatments besides medications and surgeries that might reduce or eliminate the pain altogether.