Hi please please please can somebody help me. We have covid in our house so can’t get a plumber in to help. Our shower wouldn’t go hot last night but the taps in the house would. I googled it could be a blocked shower head so I took it off and cleaned it with limescale remover. I put the shower head back on and tried it again this morning, the water was struggling to get through the head so I ran it on cold for two minutes. As I turned the shower to hot it did go hot but the shower box sounded like a very loud kettle boiling. I got scared incase it exploded and turned it off please can you help
