I Lost My Retainer! How Much Will A Replacement Cost?

I lost my invisalign retainer at least 3 or 4 months ago and I’ve been irresponsible enough about it to not do anything until now. I still wear the upper half of my retainer which keeps my top row of teeth aligned, although my bite has significantly changed because I’m missing my lower aligner.
I want to buy a new one desperately, but I don’t have much money and what I do have I am saving up for college (which I will be attending in less than 2 months). I’m concerned because I’ve heard the cost for molds, etc will be around 300$!
My main questions are; How will my orthodontist be able to replace my lost retainer now that my teeth have moved?
and… How much will it cost?
Braces on the bottom half of my mouth would be so expensive… and my parents are definitely not willing to fix my mistakes so it’s up to me
Pity/help me!

Help Me! I Lost My Invisalign Aligners! What To Do?

It’s Thursday night and I believe I lost them yesterday at school. These are the last aligners before getting my final retainers. I’m actually pretty much done but still had to wear them because I have an implant crown that needs to be replaced before getting the final retainer.
I have no contact with my orthodontist until Monday. His office is closed tomorrow. I’ll only be able to see him Monday but the thing is, I feel I really need something to keep my teeth in line before Monday comes along. I know, from experience, that if I don’t wear my aligners for more than one day, my teeth do shift a little (I notice this because when I put my aligners back in, I feel the pressure).
I need something to retain my bite. I have a really nice general dentist. You think I can have her make me a retainer (I’m willing to pay whatever).
I’m just so worried. Advice?

I Got My Braces Off Last Thursday And Lost My Bottom Retainer.. How Much Will It Cost To Get A New One?

its the clear like invisalign ones and another thing i lost them friday night its now sunday and the orthodontist wont be in until monday.. will my teeth shift?