Mimiasovitch, my dd was only 6 weeks old when I tried to give her some formula and she had extreme and prolonged vomiting immediatly after. Next time following the HVs advice to try it again just to be sure we ended up in A&E! BTW the more you give them, just to test out whether it really is the formula (as advised by HV) the more sensitive they get to it. I only found this out after seeing a homeopath regarding her allergy - she was shocked that the HV had advised this after such a clear and severe allergic reaction. When I saw a consultant at the allergy clinic, they were also equally horrified!!
We tried goats milk formula just for mixing foods etc, and she did seems much better - no vomiting. However she was constantly ill - runny noses, every bug going etc. She then had a very severe allergic reaction to something - still don't know what it was - and we ended up with her on steriods for days and several more visits to A&E.
In the end we went to see a homeopath who immediately advised us to take her off all dairy foods, including goats milk products. She hasn't looked back since - no more colds etc than the normal child - she is now 5 Per Homeopath a child who has more than 3 or 4 colds a year or 2 or 3 tummy bugs is probably intolerant to something in their diet.
I think you are probably going to have to give the goats milk a go and see how you get on. It certainly does seem to be better tolerated. However, do watch out for any other less severe signs of intolerance/allergy.
You might also note that some of the supermarkets do a lactose free (or certainly reduced) cows milk it may be worth considering using this if you are only using for mixing and breastfeeding otherwise.
I ended up breast feeding for far far longer than I anticipated because all of the alterbatives were just not working for my DD!!