What tampons would you recommend for someone who hates tampons?

First of all: Don’t read this question if you think tampons, periods, or the like are icky or you don’t want to hear about them! I’m sorry! Take yourself someplace else!

I’m going to the beach tomorrow, and I don’t want any problems. My flow won’t be very heavy, but it is um, thick, like with globs.

The reasons I hate tampons are
1. I hate the feeling of a cotton object just sitting inside my body
-I’ll have to get over that for one day.

2. They tend to slip out when I’m doing physical activity! Really! More than once, I felt this really odd sensation during PE class when I was in high school, and I went to the bathroom to find an icky tampon just sitting in my underwear instead of my cooch! Ew! And YES I had inserted it correctly. I had long painful discussions about it with several adults.
-I really cannot get over that.

3. Sometimes the globs kind of slip over the tampon and out into my underwear. Yuck.
-Can I please not have to deal with this? Ick.

And, since I’m going tomorrow, I need something that’s easily found in any given drugstore, not something I have to special-order from the internet.

If you got this far, thanks so much! I really appreciate your help! Anything you can suggest or tips you can give me would be great!