How to curb my personal "sweet" tooth? This is getting crazy! I think I have an addiction...

Good evening (or technically morning), MFP users. Ok, the reason I quoted sweet tooth and said personal is because it's not the standard, common sweet tooth that many people have, or at least people I know. It's actually a chronic craving/preference for salty foods. It feels like an addiction at this point, and it's gotten out of hand now. The good thing is pickles, soy sauce, and many pickled vegetables for example are very low in calories. The bad thing is they are loaded with sodium. But sodium/salt is my "sugar". I've noticed a daily pattern. My sugars are almost always very low while my sodium is skyrocketed. I recently even downed 2 jars of dill pickles in one day! And I put soy sauce in almost everything I eat. I also eat a lot of vegetables, which is good, but many are canned/jarred. And I love hot sauce, too. I even put it in my scrambled eggs. Then I end up with bloat and gain several pounds the next day which takes 3-5 days to go back to normal IF I lower my sodium while drinking a lot of water those days, which sometimes ends up in a sodium binge a week later. This cycle is crazy. It's gotten to the point where last week I had to excuse myself in the middle of class and ran in the closest bathroom on campus to throw up (not purposely). I don't know why these salt cravings are so intense, not to mention my sugar cravings are almost non-existent (for real). Even at parties and special events, I'll pass on the cake, cookies, and ice cream, but I'll eat up almost all the dip, chips, pickles, etc. What's going on? Please help. To give some info about me, I'm female, 5'6 and 131 pounds. I exercise 5-6 days a week (either weight lifting, cardio, or both depending on the day and how I feel). I also attend college so I do a lot of walking and carrying a messenger bag, except on rest days which are weekends.