Affiliate Links for Membership Sites

Hello, I am creating a membership site where each member can share a link of my site. I want to be able to give each user a different URL and be able to track how many clicks have been made to it. Kind of like an affiliate program, members share links of my posts and I track down how many clicks have been made. I can use bitly for click tracks, my only problem is providing a unique link for each member.
Thank you!