Genuinely don't know if IANBU here. Last night in the bath I noticed DS2 (18mths) has marks that look very much like small bite marks across his back.
Nursery didn't mention anything at pick up about him being bitten but he did have a huge black eye that they had done an accident form about, the reasons for that seemed very plausible knowing DS2, he has NO fear and is very boisterous generally.
Rather than drip feed I will say it's not the first instance of him having come home with random bruising. On separate occasions in the past I have noticed unexplained bruises on him and our GP also noticed and mentioned that I should be "keep an eye" on him.
DH says I'm overreacting by wanting to complain and that it's bound to happen that the odd injury will occur out of eyes of the nursery nurses, certainly he does pick up the odd bruise at home that I haven't seen happen but I feel terribly that I am failing my son by not raising this with them.
Generally, I'm very happy with nursery and DS1 has never been a cause for concern. We can't afford to move them anywhere else, this is the only barely affordable childcare option we have.