I may be being completely ridiculous and am happy to be told so!
I breastfed DD for the first 10 weeks of her life. I was 21 when I had her and completely clueless about breastfeeding, and anything to do with having a baby really. She used to feed every 1-2 hours for a maximum of 5-10 minutes at a time, sometimes much less. To me, this was normal. She never slept for more than an hour at a time throughout the night and was constantly crying. Again, I assumed this was normal, as noone ever told me any different. When DD was 10 weeks old I took her to the health visitor to be weighed. The HV told me that she had lost too much weight, was far too skinny and was not being fed enough. She asked me about how often DD fed and how long for and was shocked when I told her. She told me to take her home and give her formula immediately. I went home and gave her a bottle which she drank happliy and I cried and cried and convinced myself that I was a failure as a mother. I FF from then on and DD was much happier and slept much better.
Looking back now, I realise that I was silly and naive and just did as I was old. I think I should have been given more advice and help with breastfeeding, but it was never offered and I just didn't think to ask for it. I regret that massively.
DD is now 5 years old, and ever since she was weaned has loved her food. She will eat anything and everything, would probably eat non-stop all day long if I let her. I did have concerns about her being overweight when she was a toddler, but she is now well within the healthy weight range for her height and age and eats a healthy diet. However, she does constantly ask for food, and has done since she was old enough to talk. She's always happy when there is food in front of her, and clears her plate at every meal. I can't help wondering if this is partly due to the fact that she was under nourished as a baby. Maybe she subconsciously remembers being constantly hungry for the first 10 weeks of her life? 
I was looking at some baby pictures today, and I can't believe it took so long for me to realise something was wrong. She looks so skinny and bony in the photos. I'm sure others must have noticed 
So, AIBU?