Someone tell me I'm a paranoid FTM to be and need to step away from Dr. Google!

I woke up this morning with a deep pain on the side of my right knee. It's in a small area. I'm worried it could be a blood clot. My leg isn't swollen or red, nor is it hot. I only have the pain. DH thinks I either slept wrong or that it's sore because I went on a long walk yesterday. Should I call the doctor in the morning? We're going out of town Monday for a week and I don't want to be worrying the entire time that something is wrong.