Pain in right calf bad knee. About it?

I got injury in right leg while playing 46hours before. After injury I took off from the practice but after sometime I felt better then I did some running and exercise but been I reached home after 2/3hours I felt pain in knee and even in walking too .It was swelled till evening and I was experiencing server pain in knee and in walking but I was doing icing after every 3/4hours abd had painkillers and antibiotics of very low power .Now after 46hours I can knee the swelling over knee is almost gone and I am feeling much better, even in walking too but there is still swelling on calf muscle and pain and stiffness in calf muscle .As I already had gone through one ACL surgery of my left knee . When I had this injury I felt traumatized for my future .Kindly help .Is everything okay with my knee ? Do I need to worry about it ? What should I do about it ??