Background first: breastfeeding was a disaster initially, as my DS (who was born 3 weeks before his due date) had bad jaundice and slept all the time, rarely feeding. He's my first and I really struggled with sleep deprivation and lack of preparation so I didn't pester him to feed as much as I should. He lost 11% of his body weight (from 6 lbs 5 down to 5 11) in the first week and as the midwives were too overworked to check him out properly and actually HELP us, I ended up taking him to A&E where they recommended ffing to get his weight back up. Both he and I HATED it and I was determined to get him back to breastfeeding. It took about two weeks to get him back to his birth weight, when he was getting about 5 ffs a day, then his weight crept up slowly but steadily. Until he was six weeks, he was getting 1 or 2 bottles of formula a day, breastfeeding otherwise. Then we went back to just breastfeeding, probably too quickly as I've read since you should taper it off gradually, and we just stopped.
However, now that he's 19 weeks, he's just 11 pounds. I've had him checked by the GP who is happy with him and he's in great spirits - very little crying, lots of fun, lots of laughing, developmentally great. GP described him as 'slender but well'. I don't know what to do. I try to feed him a lot, but he is being a bit fey about it now during the day, easily distracted and impatient if he doesn't get letdowns straightaway. He still feeds a bit at night, so I suppose he makes up for it. But I worry that he's not getting enough, and never has, because the initial feeding was so poor and my supply has always been low. He doesn't complain, but then he wouldn't know that it's low, would he? To me, that's the only explanation for the fact that he is so little. He's right at the bottom of the centiles, and having had a tummy bug for three weeks over Christmas and the start of January, he hasn't been making up ground. He's just bobbing along, putting on 4 or 5 oz a week. And he's long enough - I haven't ever been able to get a HV to measure him, but he fits in 3-6 month clothes perfectly if you don't count the flapping fabric around the middle. He's just thin.
Basically, this has been a total nightmare from the start and I can't help but worry that I have been selfish in insisting on breastfeeding, and that now he is paying the price for it. I love him so much (goes without saying, obv) and I just worry that I should be supplementing him now. Thoughts, anyone? Am I right in thinking my supply is hopelessly compromised?