Well the title pretty much says it all. DS (nearly 4 months) has over the last few days started refusing feeds.

It's escalated to the point that he didn't feed overnight at all after midnight. This is unheard of for him, he usually feeds 3-4 hourly overnight, he had one feed at midnight and that's it. He woke throughout the night 3-4 hourly but when I tried to feed him he would scream and refuse to latch on.

At times he will latch on and then scream and come off again without sucking.

I've tried sitting him up more, laying down in bed with him, tried feeding in every room in the house, every position I could think of and it's not making any difference.

I changed his nappy this morning and it was wet, but I did change one yesterday that he'd had on for a few hours (we had to take him to the hospital for some scans on his head, so didn't get a chance to change him till we got home) and it was bone dry.

He doesn't seem to be unwell, seems happy apart from when I try to feed him. I have no idea what's happened, our feeding was going so well

How long can this go on before I need to be really concerned?? Do I express and give him a bottle or will that only make things worse?

**ETA: Just managed to get him to take one side, but he wouldn't take the other when I offered it. I am quite full after not feeding for so long, so he probably got quite a bit but I'm expecting this will continue today as it has over the last few days.