By yesterday evening, the pain on my foot was almost gone, so I decided to go ahead with my run. I was feeling good after resting since Saturday morning and started to push the pace. Total distance covered was 10.1k in 54m50s.
After warming down and having my shower, I felt that dreaded pain on the lower part of the left foot's arch again. I soaked my feet in HOT water last night and applied some analgesic cream. This morning the pain was a little worse and I'm now limping a little while walking. Looks like this injury could be a little worse than I thought.