saffy don't give up hope just yet!
I had a D&C with my 13 week loss and I bled for a week, i don't know about swimming because I think they like you to wear a pad to prevent infection, I personally had mild pain, not enough to even take panadol, but everyone is different. I think it was about 2 weeks as we started trying again straight away.

fingers crossed you don't even need one.