I'll get shouted down here but I played for a long time and pain kind of went with the territory when you're playing Sat, Sun and Tues. If you do alot of games then there will be some soreness. If it become unmanageable or it feels different then you may have a problem. Calf pain was a constant for my last couple of years of playing. No injury, just muscle fatigue especially on muddy pitches. If a scan has shown up nothing then crack on bit stretch and warm up properly. Cramo is often dehydration so take plenty of fluids on boards before the game.
I know we are expected to say be careful with injuries etc but I think I'm from a different planet when it comes to this. Injury is part of sport. Soreness and a bit of pain is part of sport. You know your body and you know your current limits. If something doesn't feel right then it probably isn't. But if I didn't ref when I felt some calf pain etc then I wouldn't ref at all. The key is knowing whats an I jury and what isn't.
Probably worth ignoring me when it comes to this. But that's life when it comes to sport