Pain in calf? No injury sudden!?

About 2 hours ago I started to experience pain in my left calf. It's not sharp pain it feels more muscley pain! Now it's at front of leg too all over really from knee down to ankle and is worse when I move it I feel a strain all over. Also if I'm standing still and go to move ie walk I get a pull up the back of my calf,,, I had no injury to it I haven't even been out walking ect as I'm sick at the moment with chest infection am on antibiotics and steroids since yesterday for that. I guess I'm just worried about dvt. Any advice or info ad to what it could be. I'm female and 31 yes old thanks