My baby is just shy of 2 weeks old and nursing has been going well (at least, I think it has) for the past week. It started out a bit rocky, my nipples were all cracked, he didn't seem too interested, I thought he was starving, cried all the time, etc., but since the 2nd day that my milk came in it has been a lot better.
Well, these past few days my baby is showing some different behavior and I'm wondering if anyone has any clue what it could mean. When I'm not lying down nursing him at night, I typically hold him in the football hold to nurse on my left side specifically because in the first week of BFing he latched on really quickly on my right side while laying across my stomach, but struggled to latch on my left side, so my husband suggested I hold him in the football hold to mimic the position that he was in while nursing on my right. It worked.
Now, he is suddenly having a lot of trouble latching on on the right side and has no issues with the left (the opposite of how he started). He can ultimately latch on the right, but it takes him a long time and he is acting like he is starving the whole time. For the past 2 days, once he does latch on each breast, he starts fussing a few minutes into nursing. Tonight it has escalated into him pushing off of my body with his arms and legs, unlatching often then frantically trying to relatch, moving/shaking his head around while he is still latched on (which HURTS) and breathing heavily, and if I pull him away out of frustration, or if he unlatches himself, he starts crying/screaming and desperately tries to latch back on as if he is starving. He fusses more on my right side, the one he is now having trouble latching onto immediately, but he will also fuss on the other side too.
I leak milk constantly so I don't think I am struggling from a lack of supply. When I'm done nursing, even if he sucks for an hour like he did tonight, if he has not fallen asleep, he will still root and suck on his fingers. He nurses anywhere from every hour to every 3 hours during the day, and during the night it is more like every 3-4.5 hours. His poops are mustardy yellow with lots of green seediness and we change his diaper probably about 8 times a day. He is a little peanut and I'm constantly worried that he is not gaining weight or something (we go for his 2-week check up Wed) so this new behavior has me a little worried, not to mention frustrated. Any ideas as to what is going on?