We have an older home with a well. Our well water is so bad with rust and other gunk that even a large whole house water filter didn't last a week without having to be cleaned. Well pump service man has chlorinated the well twice in the past year or so, and said that will resolve our issues (I'm questioning if that has even helped at all). We have however had really good water pressure on all faucets. However we recently had a power outage that lasted two days. Since the power issue was fixed, there is barely any water pressure in the bathtub (fill spout and shower head) and toilet. Toilet suddenly takes forever to fill. All other faucets in house (including bathroom sink and wash machine) are normal. It's only affecting tub and toilet. What should I be looking for?

Forgot to mention it seems to not matter hot versus cold.