My horse is swollen in an unusual spot?

Hey everyone, I'm new to this forum. I'm Taylor. I currently own a 14.3hh 10 year old, QH, Gelding. He shows in the 3'6 jumpers with me. He has been shipped from South Florida to Western Pennsylvania recently. From where I live to where I'm staying for the summer. He's been here for about 2 weeks now with no problems. Settled in perfectly and has been lightly ridden since. He was alone at my house in Florida but now he has a buddy who's a mare. They get along well. We had no issues until yesterday we noticed swelling around like the casing of his penis. Not the penis itself but the area around it that hangs down a bit. I don't know the proper term for it. But it was only the left side but now it's the right side too? I was thinking it was some kind of bug that's biting him cause he does have a mark on each side. But I'm not sure. Help?

He could need his shealth cleaned. They sometimes swell randomly in different areas and not the whole thing at times. He also can have a bean in there iritating him.

Pictures would most definitely help! But if it looks like a bug bite, it probably is. Since its in such an odd spot, it most likely has swelled up because it can't drain.

I'll go out and get a picture now, it'll be up in a few minutes! :)

My gelding has this alot in summer, alfalfa plays a big side, and standing if he does not get out daily, when he is turned out, it goes down..we hit 110's here, so stocking is easier, could also be a bean, just inside penis, there is a little pocket that gets built up, and needs to be cleaned its easy to get at, is he does not mind you doing it..:) If you can clean inside his sheath, this will help with future problems...:)

His hay does have a lot of alfalfa in it. He's turned out every night too (8+ hours) How would alfalfa have it swell it?

My guy, gets stocked pretty easy, straight alfalfa is very rich, and the longer her stands, he gets stocky and seems, to got to his sheath, but some horses it also effects their back legs, ...he does not have any heart conditions, he has been tested for everything , so in summer he goes on grass...and does much better

Here's some photos

http://i200.photobucket.com/albums/a...4/IMG_0454.jpg

http://i200.photobucket.com/albums/a...4/IMG_0453.jpg

His sheath is def, swollen, I would suggest , start with cleaning is it warm? If he will let you , touch, please be careful... check all over for possible bites, but it looks evenly swollen, to me...not like a bug bite, being more so on one side, start there, he is urinating ok?

I'll try. But it started out on one side and moved to the other. That like indention in it has never been there before.

ETA: He's been urinating okay