I can answer some for you.....

What sort of specialist would deal with male infertility? My gyn apparently mentioned to DH the possibility of a testicular varicocele which could be causing the problem and can be corrected surgically. But what sort of doctor would fix that?

He'd probably need to go & see a reproductive endocrinologist.

Is there a type of specialist that could deal with both his problem and mine? I mean, obviously the gynecologist can do nothing for DH, and someone specialising in problems of the male reproductive system (urologist?) wouldn't be able to do anything for me, but is there someone who can deal with us both, short of going the IVF route?

As far as I'm aware an RE can deal with both of you....

To do with intercourse timing... I know they say that every second day is best for TTC, but why? With a bad sperm count should we be BDing more often or less often? I thought it would be more often, but when I mentioned this to DH he said it made no sense... that if a male with good sperm needed two days to recharge, then a bloke with bad sperm would need even longer. I thought it may have something to do with getting a decent number of sperm inside... that if a normal healthy male will deposit over 20 million each time, then we need to BD 4 times to get that as many as another couple would get once... If that makes sense? Does anyone know which of us is correct?

The RE told us that it was better for us to BD every day (Aaron's count is 5million as well). What he said was that with a low count if you leave it for 24hrs the count would be back up to 5million, if you leave it 36hrs it's not going to get any higher, same as if you leave it 48hrs etc etc. He said the reason people DTD every second day is to get back up to the high count, so if you're never going to get there what's the point in waiting? So the point is if you DTD Mon, Tue, Wed you'd have had 15million in there potentially, compared with DTD Mon & Wed where you'd have only 10million. Make sense?

I'm wondering whether it would be worth us trying to continue with natural conception (as natural as clomid, acupuncture and everything else can leave it), or just go the whole IUI/IVF thing straight off... really tough decisions to make and I don't know the first place to look for the answers!

This is a toughy & really only you can decide what to do.... Having said that we tried for 2yrs before fially biting the bullet & saying we'd do IVF. How long do you want to wait? Do you need to save money? Is this something that is burning so badly you just have to do it now? It's a tough one...