Cant Get Into Masturbation

Hey so fairly recently, I lost my virginity. It was initially hard to "get it in" and ended up being mildly painful. My guy fingered me with two fingers beforehand which was also unpleasant. 
I figured I may have not been turned on enough, but I also think it may have been caused by my lack of masturbation, so afterward I decided to start masturbating to loosen up so it would be easier nextime.
 But I can only fit one finger comfortably, and although it wasn't  painful, it wasn't  enjoyable either. I've tried a couple times after that too. Am I doing something wrong? I would love some tips. Also, I'm 17 btw.