I have a springer in heat, she got injection last week as my other springer got her. Its her second heat and she was to young, I have a black lab that neatured but he got to her, they got stuck twice, can she be pregnant, he was done over a yr ago.

If your lab was neutered over a year ago it is extremely ulikely that she would be pregnant.

Yes, neutering can go wrong and not be done correctly but it is a rarity. If you are worried consult your vet as to what the best coarse of action would be. The misalignment injection is not very healthy for the b*tch so should be avoided where possible.