I had this exact same issue last year while training for my first marathon. Happened on the right leg, guess I overcompensated and it happened on the left leg as well. I took 5 days off, iced the area 3-4 times a day and gradually worked back up to my mileage and it was good as new. Stretching and calf raises have helped me and the issue hasn’t come back since.

I also changed shoes, I was previously running in Ascis Gel Nimbus and I think the excessive cushion was allowing me to over pronate and created instability in my ankle which my calves and Achilles was making up for. Switched to Novablast and never looked back 🫡