We normally would recommend adding some muriatic acid to lower pH. But, if you will use the dichlor in the recipe that Ben linked above, it may lower your pH enough that you won't need the acid since dichlor is acidic. It would be a good choice for your new fill as it will add chlorine and needed CYA.

For today, go ahead and use bleach. Since you report no chlorine and the pool getting cloudy, I suspect you may be on the verge of an algae bloom. I am going to suggest that you go ahead and shock the pool this morning up to about 12ppm. Go ahead and add a quart of bleach this morning and run your pump 24/7. This evening, test the water and see what your chlorine reading is and also tell us what the condition of the water is. Test the chlorine first before testing the pH. If the chlorine reads above 5ppm, you won't get an accurate pH reading with your kit. If that is the case, you can mix a 1/4 cup of pool water with 1/4 cup distilled water and then run your pH test with that mix.

Do you have Sam's club nearby where you can go and get the dichlor today?