Can my teeth be saved?

All of my front teeth are very loose,l really don't know why for sure but I think is a combination of celiac disease and the fact that I clench at night. I am beginning to realize i have some issues with anxiety and coping with stress. Anyway, I am finding it hard not to eat wheat, because gluten free products and meat are so expensive. I do not have dental insurance, I am going to get a night guard from the store as soon as i can. This first started happening when I went all raw for 3 months, which is why I stopped, because i heard that going raw can cause dental problems from all the sugar and lack of calcium. Then, a couple of months after i quit raw, they firmed up again, but now are just as loose or even more than they were when i was raw. I wonder if it could be from stress, because it seems that they just took about 2 or 3 weeks to become loose this time, and the last 2-3 weeks i have been seriously stressed. When i was raw i was really irritable as well. So what do you guys think it is, celiac, stress or both. My teeth are not bleeding, i do not have bad breath. What should I do to prevent further looseness, I am trying my best to relax so that maybe i will stop clenching at night. How much are dental implants, bridges, veneers?