Why does my implant feel like it's popping out of place?

I would encourage you to schedule a visit with a Board Certified
Plastic Surgeon immediately to determine the exact source of your
discomfort.  You will certainly require a
clinical examination and may also require additional imaging studies such as an
ultrasound, mammogram, and/or MRI.  If
these indicate a rupture, your surgeon will likely encourage you to proceed
with surgery.

I'm sorry to hear of your experience as most are delighted after such procedures.  If you can't see your surgeon, find a doctor in your area that provides complimentary consultations and get a second opinion.  If you truly cannot afford any kind of revision, then you don't really have any choices except to accept it until something happens that requires another procedure.  There have been creative ways to raise funds on-line but I'm not aware of just how successful they are.  I do complimentary consultations those those residing more than 50 miles from my office.  You can contact my office to schedule one if you like.