I’m in a tough area of my new adult life and I need some help

Im a 19 year old male Christian. I have been dating my long distance girlfriend for over a year that I love. Recently I have been asking myself if it’s the right relationship or right time for me. I constantly worry about pregnancy even though we take safe precautions. I know it’s silly to worry about maybe but I am a sinner as well and I fall to the sin which means that things could happen related to sex outside of marriage.

I also fear anything getting in the way of my dream to fly and become a professional pilot that I believe god gave me that dream since I was a little boy. I’ve already put gods gifts to work and got my private pilot license thanks to him. I’ve prayed to him about it. About this whole situation.

I’ve also fallen to lust for other women with eyes and thoughts but I’ve fully recognized it and am learning to replace moments that might lead my to bad places with god. I wanna fully be my best self first my partner but still I have this gut feeling that’s been in my for 6 months that comes and goes.

My gf is a wonderful soul that also is a Christian she’s dating to marry and so was I but recently I wasn’t sure or starting to think maybe I have to fully find out who I am with god alone. To chase my dreams flying completely and wholeheartedly without worrying about the chance of pregnancy or life getting in the way.

How do I navigate this? I prayed to god about it I’m not sure yet why my gf is in my life and if she’s supposed to be permanent or to go one day and be a hard lesson.

Any guidance or prayers would be appreciated.