How much does it cost to get Nexaplon and is it the best version of birth control for me

I just lost my virginity two days ago to my sweetheart. And well I'm scared of getting pregnant while I'm still young, I'm no where near ready for a child, and I don't want to have to worry about a small and thin piece of latex popping or tearing and changing my future forever. I'm concerned about taking pills because I know I won't be able to remember to take them and well I'm guessing Nexaplon would be the best choice for me. If any of you ladies have any recommendations or anything that could help me with my decisions that would be wonderful