I'm sure that there are other people who are better at digging chords out from bass lines, but I'm pretty sure you scored this in d minor. The bass line sounds very odd without the Bb. Try humming the melody along with it; it really doesn't fit, especially when you hit measure 2. Also, I think you have a typo in measure 1; that G really should be an A. Putting a 4th in that type of bassline really makes it sound wonky.
I also say D minor because otherwise the chords, like you noted, are weird as hell. Assuming that we're in d minor, we've got: dm gm C F dm gm am am ,or I IV VII III I IV V V, which makes a little more sense musically. If you want to look at it from the relative major (F major), then things really start meshing; you've got VI II V I VI II III III, and the II-V-I turn is a very common jazz progression.
Finally, assuming that this is the chorus, that last A should probably be a Bb. Just as a hint to help you work out the really odd jumps that are about to come along.
Good luck with the rest of it, and keep it up! Training your ear like this is very very difficult (I did it myself). But over time (maybe a year, if you do it off and on like I did), you'll develop your ear to the point where you can hear a song and immediately start banging out a fair approximation of it!