Hello! I'm so sorry to hear about your recent loss.
AMH gives a general indication of your likely egg reserve (and, as a corollary, how well you might respond to drugs intended to stimulate your ovaries during fertility treatment). It doesn't tell you about egg quality, though.
The main predictor of egg quality is actually age. Probably around 80% of your eggs are chromosomally abnormal by your early 40s, however healthy you are otherwise. So, it's not uncommon that it might take longer to get pregnant, and sadly miscarriages do become more common with age.
It's possible to do PGS with IVF, but it's very expensive, and as you've noted, you might not have a large number of eggs retrieved, so it's not a guaranteed route to success. If you want to explore your options, you could have an initial consultation with a clinic and see what they suggest - in your position, if be asking about likely success rates, as these can be quite low for women in their forties. (Sorry, I know it sounds like I'm going on about age - if it helps, I'm the same age as you.) Or, many places do free open evenings and the like, so you can suss out whether they offer the kinds of treatments you're seeking.
You may well find that clinics suggest considering donor eggs, so this is something to think through. And, you might also want to think about whether you'd consider having treatment abroad, as this can have a big impact on costs.
I know it's a lot to think about! Please look after yourself, and please do ask if there are things we can all help with.