Oh Kay, that would freak me out too.
I haven't had a hysterectomy so I have no experience or expertise to offer you here, however when I had an emergency operation for a torted ovarian cyst the gynae hospital team told me I could call them in the week or so after my discharge if I had any worries or concerns. Could you call the hospital ward you were on to get some advice/reassurance from a doctor or one of the nurses? It's only just over a week so it's not unreasonable.
In my non-expert opinion, the fact that you describe the discharge as 'pinkish' suggests 'stained with a little blood' rather than 'fresh blood' which would be reasonable given the amount of 'rummaging & stitching' they've done up there. It's also strongly likely to be lymphatic fluid - we produce a lot of he stuff! It sounds as if you need absorbent pads for a few days and reassurance that this is normal and/or will slow down and go away some time soon. I'd definitely call to speak with someone for that advice/reassurance. It's probably entirely normal, but if it isn't it's best not to leave things too long. Either way, you'll have some piece of mind.
Be gentle with yourself.