Groin pain only when lying down

My husband has been experiencing terrible groin pain,left side,for over 12 months.  It only starts after he has been laying down for an hour or so. He then has to get up & sit in a recliner & then the pain will gradually go away. This happens every night. The pain does not go into his testicles. Saw Dr. Balderston in Phila at Univ. of Penn who said it wasn't caused by his back problems. He felt it was hip related.  Saw Dr. Nazarian of Univ of Penn & he said it wasn't hip related. Have seen many doctors who just say they aren't sure & they wish us luck & send us on our way. They seem to be puzzed that the pain only happens when he lays down.  Tried anti-imflamatories which didn't help, 5 day steroid packs which helped for 1 night.

The past 2 nights he has also experienced pain from his left thigh to his knee. We are scheduled to see a pain management doctor next week.
Any thoughts would be greatly appreciated and if anyone has heard of a good pain management facility or doctor in the Philadelphia area I would be eternally greateful.

Mary

[Phillywoman]

TTT