Question: My son is 7 months old (will be 8 months in a week). He's been battling a stomach bug. It started at 4:30 AM on Wednesday, and is just as bad today (it's 4:30PM on Saturday so it's been going on for 84 hours). He hasn't had any vomiting, just diarrhea. For hours at a time he will seem totally fine. He'll take his bottle and play and smile, then suddenly he will get bad stomach cramps and have back to back to back diarrhea and he'll refuse to eat. Last night while I was changing one of his dirty diapers, I looked at it like I always do and there were streaks of blood in it. We went to the ER and even bagged the diaper up to take with us to show the doctor. When we got there, my son was back to normal and acting happy. We told the doctor his symptoms. He didn't run a stool sample. He didn't look at the dirty diaper with the blood streaks in it. He just gave my son some zofran and sent us home. When we got home, my son ate about half the amount that he normally eats and he got stomach cramps soon after but no diarrhea thanks to the zofran. He woke up again at 4:30 this morning with a good amount of loose stool, but I didn't see any blood. Then at 9AM he woke up again and after drinking 1 oz. he had diarrhea and this time there were small streaks of blood again. What does this sound like it could be? Should I take him back to the ER and specifically request that they do a stool sample?

The doctor in the ER last night examined his belly and said it felt soft. Would it feel hard if it was intussusception? There also wasn't a lot of blood in his stool, just some small streaks. And he doesn't have the currant jelly stool that I've read is associated with intussuaception. He also doesn't have a fever .