muscle cramps with Humira

Last night was the second time I have taken Humira. about 20 minutes after taking the shot in my stomach, I started to get a huge charley horse in the location of my shot..I went to bed, two hours later I was woken up with severe charley horses in both calves, shins and feet. I could not walk or sit down for over 20 minutes they were that severe. I finally got it to settle down., ate two bananas and went back to sleep only to have it happen exactly two hours later. I find it had to be the medication being as it started almost immediately after the shot. I also take methotrexate (spelling) but have been taking that for over 3 months. Anybody hear of this happening or have had it happen to them? I would appreciate any input or way to avoid this. Thanks!