Hey so my girlfriend and I want to be able to freeze her sperm before she starts to transition. She's 21 and her mom won't let her do it, and says it costs too much. I know she's an adult and she can do it if she wants to, but neither of us have the money. We can't take out a loan because of interest, and it's just too hard.
This is honestly such a huge thing for me, and I want to be able to have kids with her when we get older. I've literally been crying about this for the past few weeks. I know that we can always adopt and stuff, but I think it would be so amazing to have a baby with her, and I really want to do it.
What's the cheapest way we can store her sperm? Where do we go? I don't know what to do.

This is really important to me.
Can someone help??
Thanks so much <3