Hi A.!
After my 3 year infertility journey from 2000 till finally results in 2003, I sympathize. However, if you don't know what is causing the TTC, then you really are just banging your head against the wall. Until you know, then really there is no reason to do anything else except wait.
Do you have an OB/GYN who dabbles in infertility or no? If not, then don't waste anytime with them unless they are willing to do an SA (semen analysis) on your dh. I belonged to 3 support groups going through what I did and I can tell you all about it! I had 6 IUI's (4 with my OB, 2 with an Endo Doc) and then my final 2 IVF's with my final Doctor James Douglas! If he can't get you prego, then no one can!! He has been named the best Infertility Doc for 5 years in a row (has been in practise 10+ years) in D Magazine! He is great, but no sugar-coating, which is what I like to hear and see!!
I sought all kinds of advice to "spark" up our sex, but that wasn't the cause after all! Your dh is just going to have to suck it up and do his business in a cup if you guys really want to have a baby. My dh ended up doing it this way for about 12 to 15 times within the entire journey of infertility, you gotta do what you gotta do if you really want a kid!
Email me at ____@____.com and I can give you some great info!
Good Luck!
G. B.