Hi George,
My husbands bag definitely became more pink if we had walked a bit more etc and that was more than a week after op (he had catheter in for 4 weeks). He had some little clots come through aswell but just think it was post op debris.
Do you have the number of the ward you were discharged from? If so maybe give them a call and see what they think.
As Chris says if you’re in any doubt make sure you get in touch with a medical professional.
Hope all will be fine, best of luck with your ongoing recovery .