Screaming, spitting up and sunken fontanelle?

[Koolio11]

DS is a month old already. He has screamed from 7:30 pm until just recently (about midnight). He has nursed once in that time (a good lengthed time) but has also spit up a TON in that time- very thick, chunky and projectile. I also noticed that his fontanelle (soft spot on the head) is slightly sunken. I believe that this can be a symptom of dehydration. We already have an appointment with the family doctor tomorrow late afternoon but should I be more concerned and taking him somewhere sooner? Any tips, ideas, anything at all, would be appreciated! Thanks!

[jeebee]

If he stops wetting diapers overnight or stops seeming alert like he normally is... then i would definitely go to the ER in the morning. Because they're so little, dehydration can happen very quickly in infants, so don't waste any time. But if he's still nursing ok, then i would think it will be ok until the afternoon. Of course, hard to tell without seeing him, but you know your own baby best. Hope it's nothing too serious...