Hcg shot?

Stephanie • 28. TTC baby number two!
Hello all. After talking with my Dr. Today she said se would like to do an Hcg shot if I have the proper follicles. I've been reading up on this but still don't understand completely how or why this helps te ttc process.. But I'm sure she will explain next week when I go on. Have any of you gone down this route and can share your experience? Thanks!