I can't answer your question about the shots, but in case this is relevant: I had a chemo port-induced subclavian blood clot earlier this year. (According to my surgeon, that happens in about three percent of people.) My oncologist told me that if I experienced another clot (now that my port has been removed), he wants me off all hormone therapy, since the aromatase inhibitors also come with a risk of blood clots.
Although the port-induced subclavian DVT is rare, its incidence seems to be increasing. I write more about that here:
Wishing you all the best with the next steps.