UFINDME - quit beating yourself up over this. You slipped up, big deal! You recognize it was a mistake, but you just had to try it once more. You even said they didn't taste very good, so throw them out, once and for all! My sister keeps saying, she wants to try to smoke just one, just to see what it's like. I'm like, "WHY??? Don't do it!"
4 months and a week smoke-free, wow!! That's awesome......I'm curious, what made you decide to buy a pack and smoke some? Did something stressful in your life happen, because that's what we all used to do, grab a smoke, not that it helped, but we thought it did for a minute anyway.
Just focus on getting back on track quickly. Drink lots of water, juices and eat healthy for the next few days. Concentrate on you!! Getting YOU back in order again, and back on track to being nicotine-free. Don't worry about what everyone else will think of you, they don't even have to know you "slipped". That's all it was, just a slip....
Now, throw those nasty smokes away and get yourself a nice glass of ice water and a carrot stick to chew on.....and let us know how you're doing..