Hi there. i would like to start a family of my own. see the thing is im marriend. but me and my husband or not?

together.. we have not been together for about 5 years now. i don't want anything to do with him. but anyways. like i said i want to start a family. how can i do that i was planning on going to a sperm bank but i don't know what info they will want from me.. can someone give me info prices or if you been to one yourself thank you.