Suggest Treatment For Difficulty In Lifting Legs

Hi doc, I am 40yrs old. I am 5.5ft and weigh 70kg. I am not able to lift my right leg to my bed and have difficulty in lifting leg to my car seat. I had severe cramps like pain in my tighs while sleeping 2days ago.iget swellings in foot even for 2hrs of car travel and I had severe foot pain for sometime which has subsided.