Failure to Thrive

Emily

My daughter weighed in at 8lbs and 14ozs at her 2 month check up and was 22 inches long. The doctors had me bring her back in a week later to check her weight again and she was 8lbs and 6ozs. She's breastfed and nurses when she's hungry. Roughly every 2-3 hours and she eats for about 30 minutes on average. And when I pump on getting between 4-6ozs from each side. She was 6lbs and 15ozs at birth and I had trouble getting her to latch for awhile. She seemed to be doing great and then all of a sudden she's not gaining weight. Her doctor had me get her blood test done and he said everything was normal. But they are giving me a hard time still. Has anybody been threw this?