A couple of hours ago I developed a lump on the back of my right leg, just above my knee. It's really sore to the touch and slightly swollen. I can feel it when I walk and my lower leg now feels a bit tingly.
I'm not overweight, I haven't recently travelled anywhere, youngest dc is 14 months old.
I'm a lone parent and it's my dc1's birthday tomorrow so frankly I haven't got to time to expire in my sleep!
How likely is this to be something to be worried about?