Interesting one. The computer was saying that white was in advantage, i guess because you came out with the queen too fast and you were a bit back in development. You might have lost with a great counter attack if that h4 move wasn't missed i think. That queen was too exposed to the white minor pieces.
1.d4 Nf6 2.c4 e5?! 3.dxe5 Ng4 4.Bf4 Bb4+ 5.Nd2 Qe7 6.a3 Nxe5 7.axb4?? Nd3#