I just finished C25K W5D3 last week, now my left knee hurts. When do I run again?

I just finished C25K, Week 5, Day 3 last week. During the run, I had a very slight knee pain that I was able to push through without any problems. After the run, I had a slight ache on the bottom left part of my knee only the left leg whenever I was walking. When I tried running or squats, it hurts more than walking. I t

Now I skipped strength training and running two times of this week. I train at Tu/Th/Sat and I already skipped the first two due to the pain. Should I run on Saturday when the pain goes off or should I run next week? Maybe I should rest for longer? I'm planning to get fitted for running shoes next week.

Other details:

• I started in the middle of March
• Running Program: C25K
• Strength training: r/bodyweightfitness Reccomended Routine
• Repeated the first 3 weeks of C25k and also skipped the 3rd day on the first 3 weeks.
• Normal BMI
• I run in worn out knockoff nikes.
• I run in a soccer field or pavement depending on availability. No trails around here.
• Cadence is 150 according to Nike Run Club (app) but I haven't counted it yet
• Pace is 12 minutes/mile or 8 minutes/km. In hours, 5mph or 7.5kph