Hi and welcome. Mdpools as in you're a doctor who has a pool?

Let's start at the beginning.
We'll need some info. Try to get us what you can.
We need the actual tests and the values measured. We vary as to what "good" means. Tests should include:
Free Chlorine (FC)
Combined Chloramines (CC)
Total Chlorine (TC)
pH
Total Alkalinity (TA, T/A, Alk)
CYA (Cyanuric Acid, Stabilizer, Conditioner)
Calcium Hardness (Total Hardness, CH, TH)
What kind of pool do you have?
What is the volume (in gallons)? If you don't know and can estimate the cubic footage, multiply that number by 7.48 to get gallons.
What kind of pump and filter do you have? What size of each?

Also what is in the chemicals you are using. "Shock" is actually a verb. There is no substance called "shock". It could be Di-Chlor powder, Cal-Hypo Powder, Tri-chlor powder, or Lithium Hypochlorite powder.

What are you testing with? If you are using DPD chlorine test kit, high chlorine can bleach out the test and make it look like you have no chlorine when you have lots of it. the cheapie OTO tests just go from yellow to orange to brown--no bleaching.

So get us what you can and we can give an opinion of what's going on and what we think you should do.