You test your water as many times a day as you can (2 at the minimum -- more is better) and each time you add enough bleach to get back to shock level.

How high does your chlorine tester that you currently have go up to on the scale? 5?

You're gonna have to test it yourself everyday -- not just every few days at the pool store. There is a dilution method that you can use to make your tester go higher than 5 which is what I expect the limit is on yours.

Take one part pool water and one part distilled water. Mix together and put some of this in your test vial. Test as usual and then multiply the result by 2. If this doesn't go high enough to help you, take one part pool water and two parts distilled water, test and multiply the result by 3, etc. This method is not super accurate but will at least get you by until your kit arrives.

Remember, each time you test, add however much bleach you have to (all at one time, don't have to wait) to get back up to shock level.

Hope this helps and I hope you get your kit soon so it will make it easier for you to clear your pool.

One more thing. Take a deep breath. Now take another one. Relax. This is gonna be cleared up before you know it and you'll be enjoying your pool!