Please bear with me - my baby and I have had so much going on over the last month (since about July 5) that I can't tell what's related and what isn't, so I'm going to put it all here in case something happens to be relevant.
He is about to turn three months old. At his last weigh-in about a week and a half ago, he was 13 lbs 1 oz - so probably around 13.5 lbs now? He has 12 wet diapers a day and 1 dirty diaper every two days. This is down from the beginning of the month when this started (used to be 14 wet diapers and 2 or 3 dirty diapers per day). The consistency of his stool has also changed. The texture is like peanut butter, and the color is too, only a little darker. It also smells foul, not like the cooked-root-vegetable smell that it used to have.
The main issue at the moment is that my son has been spitting up after almost every meal. I know spitting up is fairly normal, but he's started to do it 2 or even 3 times after each meal.
The second big issue is that he doesn't seem to be getting enough to drink at the breast. He pulls off after the flow of milk stops (it doesn't seem to last more than 2 or 3 minutes). I'll switch him to the other breast, but he starts to scream because it's taking a long time to get a letdown. (I used to have a fairly fast and powerful letdown.)
I've been burping him after he pulls off the breast, but that doesn't seem to help with the screaming, and doesn't always have much effect on the spitting up.
We have talked to his doctor about the spitting up. He takes Zantac for what appears to be reflux (we started this in June, and have tried increasing the dosage singe the spitting up began). His pediatrician ordered an ultrasound on his stomach, which we got a week ago, but haven't heard back about yet. I also mentioned the crying at the breast to her, but she didn't have much to suggest, other than that some difference in the way I hold him on that side could be bothering him.
I've noticed that my son doesn't like to drink from the right breast as much as he does the left (on some of those occasions when he refuses the second breast, it's usually the right one, and he will sometimes eat from the left after refusing the right). The milk from that breast is also more bluish and watery than the milk on the left.
I noticed around the same time that the spitting up started that my son had thrush. His doctor gave him a prescription for Nystatin, and it appears to have cleared up. We are still finishing the bottle.
Also at that time, I noticed that my son was starting to suck his thumb constantly. He used to suck his fingers or whole hand as a sign of hunger, but now I don't know what to think when he sucks him thumb.
I think that's everything, but I will edit this if I remember anything else.
Edit, another question: My son cries and screeches sometimes after spitting up. Then he puts his thumb back in his mouth. If he's still hungry (or hungry again), how long should I wait after the spitting up before I try to feed him again?