Hi, so sorry to hear of your troubles.
Here's a few thoughts to get you started, sorry if you know all this already.
There are healthy children under 2 needing adoption, it is a viable route.
BUT you will be cutting down your options, and if the LA already have a number of people on their books wanting to adopt that age then they may not be willing to assess you, or you may have a long wait.
The LA will want you to have stopped ttc for at least 6 months to give you a chance to grieve for the birth child you can't have. We first contacted an LA after 6 months, but didn't like them and DH wasn't ready. A year later (so 18 months) we contacted a different LA - I was surprised at how much of a better place I was in by then.
We adopted siblings age 2.5 and 8. Yes I missed out on the first 2 years, but when adopting you have to accept that your child had a family and life before you. My 2.5 was still a baby to all intents and purposes. Still in nappies, 3 bottles a day, single words only, cotbed with bars, and in age 18mnth baby-grows at night. So over the next months think how important a young child really is to you. I wanted to be a mother, but I didn't need the first months.
With young babies you can't always tell how they will develop. If there is FAS or drug use the affects aren't clear. The older a baby or child is the more of a 'known' quantity you're getting.
People post on message boards when they need help. People don't post to say 'we adopted a 5 year old 6 years ago and it's all going brilliantly', so you tend to only hear the bad news iyswim.
We adopted 7 years ago, and we have been very lucky. It is all going well, no major issues. I know a number of other adopters and could say the same for them as well.
My advice to you for what it is worth is to try to have a break and see how you feel after Christmas or Easter. If you are doing IVF obviously that should be tried first. Both routes are emotionally draining.
So glad we adopted, it made our family complete.