I was at ARGC and used humira for my first cycle with them. It didn't bring my numbers down much, and they bounced up again just before the cycle but the clinic said it was ok as it was still in my system. I had a bad reaction to it, so they said not to use it again, suggesting an alternative drug. By that point, though, I'd become less confident in the science they were using and went to see Siobhan Quenby at Warwick University instead, who believes that humira doesn't treat the real problem because uNK cells and peripheral bloods don't work in the same way, and I'm using her protocol now.
I was swung by the research from Quenby being more rigorous and pointing in a very different direction. It's a really hard one. There are people on here who it seems to have helped, and others who it hasn't, as there are for so many different add-ons for which there isn't a solid research base. If you really don't want to take it, I think quite a lot of people do say no at ARGC (a nurse mentioned this to me; I was surprised as I'd just done as I was told!) and they're ok with that and will find you an alternative.