My LO is 10 weeks old, was BF up until 6 weeks but had to stop due to supply issues and attachment. So we went to formula. My LB has always thrown up, from birth until now, after every feed, and even hours after a feed. He squirms and grunts, and also his feeding pattern is all over the place. At times he takes 4oz (rarely) and every other time it's 2oz or even 1oz every 4 hours at most. Even with the 2oz bottles he spits up. He's weight gain is all over the place, one week its fine, the next it's not enough then too much. He pees fine, he poos every 3 days at most occasionally 2 days. And it's a darker green and at the end a yellowy color, sometimes with mucous. We are putting thickener in his formula, a bit less then recommended due to him having pains from straining to poo, even though it wasn't hard, more like a clay slightly softened. I am currently giving him probiotics to help strengthen his tummy and gripe water to help with burping. Doctors aren't too concerned, they keep telling me he will grow out of it, but i just know something isnt right, hes meant to be upping his intake, not staying stagnant sometimes even less. I do all the things recommended for a baby with reflux. But still, just eating very little and constantly wriggling like he's uncomfortable. Very lost.