You are very welcome, Ms Pateel,
Following are the answers;
1. The doctor said that as long as my son is only feeling pain while running fast or kicking the ball strongly, it means there is no inflammation is that correct? Therefore he does not need anti inflammatory pills.
It is not right. Pain in any activity point that there is some inflammation. Sporting injuries usually are combination of muscle strain, ligament sprain and tendonitis.
2. If he takes pain killers like panadol or tylenol or aspirin before he exercises will that help minimize the pain?
Yes, that would help. Ideally he should take Panadol twice a day for about 10 days regularly. That would help in healing.
3. He is doing a lot of swimming, basically crawl, is that enough? Or should he also do breaststrokes?
Crawl and breast stroke (if it is not painful), both would be better.
4. If he applies a local analgesic cream before exercising does that relieve the pain? And please send me the names of a couple of local analgesic creams.
Creams with Diclofenac sodium would be best. Applying it before the exercises would help.
It is privilege assisting you.