Can you catch it again if you have had it once?

I'm pretty sure I had that upper respiratory thing. I had the Flu Like symptoms and everything. The whole time I had it I kept telling myself that this is very different and I've never felt this way before. I don't go to the doctor so I had no idea what I had.

What I did was a I took lots of Bragg's Organic Apple Cider Vinegar in Cranberry Juice. More servings than your supposed to take in a day. I ate the highest sodium foods I could get my hands on. I also took Alka Seltzer when I got tired,but I didn't use much of it. I got better in 3 days.

The last day I woke up in a puddle of sweat before I got better.