Hi Clare and Dorcas, great to see you both over here!
Clare you sound so upbeat and positive despite all the aftermath of CS, if I had iron count of 8 I don't think I could stand up, even down to 10 mid-pregnancy floored me. Hope it's back up to normal soon and you recover quickly.
My little one had an undescended testicle at birth, a few days later DH and I could both see two when changing nappies and midwife confirmed all fine next time she visited. I understand it's very common, and most likely all will be well very soon. Hope it's the case for Toby.
Dorcas I feel for you with the feeding. Despite a very easy, drug free birth, establishing feeding was very hard work for me. I had problems with DS1 too, unfortunately he was only 5lb 13oz at birth and once he started losing weight, it wasn't long before we had to switch completely to bottles, I was in absolute agony, despite midwives saying latch was good, severely cracked and bleeding nipples... far worse than labour.
This time I knew before I started I was going to need help. A post-natal doula, with BF experience who can stay with you longer than a short midwife visit, watch you feeding and help with hints and tips can make a huge difference, as can a fully qualified lactation consultant. Very small changes to how you latch on can make huge differences to your feeding. As can the confidence and knowledge to let you know what will work and what's right and what isn't. To find a lactation consultant try here. It made a huge difference for me, the lactation consultant I saw is incredibly well respected locally, my midwife suggested how to help with weightloss, but wanted to know what the lactation consultant said first to be sure we were doing the best possible.
My latch wasn't bad, but I have a baby who rather likes using me as a dummy, rather than feeding well, and tends to change his latch as the feed goes on, so taking him off as soon as it felt wrong and re-latching helped a lot, as did breast compressions, to stop him nibbling and get him sucking again (try Dr Jack Newman's website for details and even video here)
I started expressing pretty early on to up my supply. I was feeding (rugby ball hold my doula had taught me) and expressing at the same time, baby one side, pump the other. Then feeding the expressed milk rather than wasting it... at about 10 days old, with a decent latch, we had no issues with nipple confusion and I'm pretty happy now that we can use either if needed. DH went out and bought me an electric pump, I've no idea which make is best, but he looked them up on the boots website and chose the one with the best customer feedback, and it's working well for me.
I was advised (after more than a pound weight loss at 2 weeks old - thankfully at 8lb 10oz birthweight it wasn't so bad to drop to seven and a half) to start one formula feed a day, which I'm still doing. Only half a little carton of ready mix so it's not much, but has the added benefit of helping night-time sleep for me. Might wean off it now weight gain is on track, then again.... it's nice for DH to do one feed, and nice for me to have a bit of a rest and more sleep. Initially I expressed at the same time so my supply didn't drop, but now it goes down fast mid-evening cluster feeding so I have no time to express as he's back to me again right afterwards.
Hard to say what will work best for you. I did take painkillers to help me get over one crack that was a bit sore (ibuprofen -- I read you shouldn't take whilst breastfeeding, but occasional use I'm told is ok). Also Lansinoh, amazing stuff. I used it after every feed initially (possibly just mentally for me to feel I was doing something to try to avoid the awful cracks I got last time) - now I just put loads on breastpads when I get dressed in the morning (last time they stuck to me once and did a LOT of damage, so again it's just preventative and for my own peace of mind). The crack I have fed through, it healed from the inside out and is fine now. Still have issues at the end of feeds when he starts trying to nibble/chew, so I'm still having to stay disciplined taking him off and putting him back on properly, but other than that, it's a breeze. And we've mastered feeding with me lying on my side at night too which is so much more relaxing than making up bottles in the middle of the night as I did with DS1.
At 2 weeks old, we'd lost 1lb 2oz, since then, gaining at steady 5-6oz per week. Weighing again at 5 weeks old on Monday and at the rate we've been going we should be back up to birthweight, just. But more importantly now, it's just how much we've gained since last time, we're tracking nicely just below the 25th centile line, so despite 75th centile at birth, we're gaining at a healthy rate so it's all good.
Very best of luck, and try to get all the help you can get.