Save My Teeth!

I have been struggling with my weak enamel for as long as I can remember, now it has gotten so bad (even though I brush and floss!) that I can't even smile without feeling insecure. I usually just cover my mouth when I smile to hide my damaged teeth. My front teeth are the worst! I have been mistaken for having a gap between my two front teeth! It is so embarrassing and not to mention painful! Anything hot or cold just plain hurts to eat. The majority of my teeth have cavities now and I have one tooth in the very back that just completely broke awhile back. I have been so stressed because I cannot seem to get a handle on it but I can't even BEGIN to afford a dentist.

Anything, and I mean anything at all, that you can spare helps me a great deal and is deeply, deeply appreciated! Thank you a million times in advance! You are amazing!