Is it normal for virgin girl to have some problems ?

Ok this is so embarssing! So I am a 19 year old girl who is trying hard to wait till marriage before having but I dont know if that is going to happen. My question is, when I can't stick anything past a certain point and it is driving me crazy. I try to push it in more but it is not doing anything. Now if I were to buy something like a vibrator and try to break through would that cause me any problems? Is it bad I can't stick anything past a certain point?