Lie Angle

You could get your lie angle checked. If you're using the Natural Golf method of standing far from the ball and stretching your arms out (ala Moe) then your clubs might need a flatter lie angle. However, given that you have an upright spine angle, I doubt that this is an issue for you.

It certainly wouldn't hurt to hit your clubs off of a lie angle board and have them bent if necessary. However, if you are only 3 years into golf, you are probably inconsistent enough that this won't matter much. This is the trouble with teaching pro's. They assume that what's important for their game is also important for their students. Bad assumption! Hopefully he didn't also talk you into buying expensive clubs or Pro V1 balls.

Spend the time to get some consistency in your game before putting a lot of money or energy into your equipment. That being said, it would be important to find your driver swing speed. Most AM's have a swing speed well south of 100mph. If so, a 15* driver with senior shafts might be the single best piece of equipment to help your game at this stage.