question: Hi doc, I am 21 years old. I never noticed a spider or anything but when I woke up a few days ago I had what looked like 2 masquito bites right next to eachother on my left leg on the left side of my calf muscle. But after a few days it swelled up, turned really red, and extremely painful. Even when I walk sometimes. There is also 2 puncture holes that are scabbed up about 3 cm apart. Can you help identify this for me and let me know if this is serious or not. I just noticed a smaller one on the back of my arm that is suddenly getting bigger and is like a bouncy ball inside my skin. But the one on my leg is about half dollar size and is way more painful. I am 5 foot 7 inches and weigh 135 lbs. Thanks for your help.