Masturbation.

So I just have a question. Im currently a virgin and i usually masturbate with a vibrater. I recently bought a dildo as I wanted to start using that too, as sometimes it feels like it would feel good. My only problem is that I've tried using it but it's kinda painful, so I don't know what to do. I also bought some lube which helped a little but it's still a little sore. Do I just need to break through the barrier of a few minutes of soreness and then it will feel good? It's also kinda tough because I will get really turned on and then once I try to use the dildo and it's sore then I will get turned off so I'm not sure what to do. Any advice would be greatly appreciated! Thankyou