Pulled groin muscle?

Hi Dr. Daniel,

I pulled a groin muscle while coughing (located above my scrotum?) where my thigh begins. It doesn't hurt much at all but when I pick up something heavy or stand for a long time, it swells some and hurts some. No solid mass inside. After a short while, the swelling goes back down.

Will this thing heal or should I see a doc? (Yuk!). Is there any OTC medicine to take?

David