Thanks for your question.
Following lithotripsy it is normal to have 'bloody urine'.
This is due to the following reasons:
1. Passage stone fragments affecting the raw surface of bladder & urethra
2. Shock waves given during lithotripsy can cause irritation of the external lining of ureters, bladder & urethra.
The passing of blood should slow down.
But if you experience severe pain, then it is possible one of the stone fragments is 'stuck up there'.
Otherwise, in the absence of pain & passing of clots, you can wait till Tuesday.