Hi Zoefitness,
we had male factor infertility due to low motility - I can't actually remember the number but think it was half the minimum so may have been 2% as with your OH. My tests all fine. We had been trying on and off for 3 years before approaching our GP who sent us for tests - the appointment was a couple of months later at the ACU at our local hospital, they immediately offered us a round of IVF.
We put it off for a while as it was a lot to absorb that I would need to go through a full cycle of treatment despite being 'healthy'. It really is a test of a relationship, my OH repeatedly said he didn't want me to go through it for him and would understand if i wanted to end things so I'd have the chance of a family in the future with someone else. Of course I wanted a family with him so took a deep breath when we were ready, went back to our GP and were re-referred to the ACU where we had treatment 4 months later.
One round of IVF with ICSI and we had one successful pregnancy and 3 frozen embryos. DS is now 8 months old. The success rates are not high by any means and I know others who have had many cycles, so realise that we have been very very lucky.
Your post took me back to how confusing and scary it all felt at the beginning and how worried we both were about our relationship.
Gathering all the info you can, as you are doing, about how fertility works and what your results mean for you both, preparing together for how the treatment will be for you (in my case injections, every other day internal scans, surgical egg retrieval, embryo return and embarrassing disclosures to work so I could keep going off to the hospital) and how he can support you during the process, is very important.
I also spent lots of time reassuring him that it was not his 'fault' and that we would find a way to make it work with or without biological children if it came to it (he knew I really couldn't imagine not being pregnant someday though). We tried to be optimistic about the treatment but still spent the time talking about what we'd do if it didn't work - you have to have a back up plan!
If you need to and decide to try, you are not alone! Best of luck to you OP x