I am a 48 year old male and I had been running for fun/form for several years. After I overcome knee pains, several months ago a groin pain started. I continued to run after giving rest for 2-3 weeks, but it restarted every time. Last time I gave a break of 4 weeks and have not felt it, but after running it came back. Usually I run a 5K after 1K warmup walk, and some cooldown walk. Pain is not too much, but sometimes I limp a day or two after running. Any suggestions?