Edie, First thing I want to say is congratulations and well done - you've got through the hardest bit.
Secondly to(hopefully) put your mind at rest a little: -
Re: the latching on thing and milk coming in issues - as everyone on here has already said it's perfectly normal HOWEVER what some people don't know is that you can expect babies to lose around 10% of their birthweight in the early days... DON'T WORRY, again to reiterate this is PERFECTLY NORMAL.
Re: comfy feeding positions - Try laying on your side with DD alongside you - a great position for watching tv in bed(!). During the night feed when DS was in bedside cot I'd scoop him from his cot to our bed and feed him lying down. One morning he and I happened to doze off together like this and I was only woken up a few hours later by a tugging on my nipple when DS had woken up, decided he was hungry again and latched himself back on (and he was less than 10 weeks old!).
re: sore nipples - This also works with nappy rash and newborn conjunctivitis IIRC. As well as the lanolin creams try rubbing your breastmilk into the sore area. It seems to have amazing healing properties and I can't speak highly enough of the stuff. I also hear that the cabbage leaves in the bra help loads too.
If you are as determined to breastfeed as I was then persist - my DS was premature and in special care and had to be tube fed for the first few days (coupled with the fact that having an induced preemie doesn't help with your milk coming in too well). Your milk is supply and demand - the more baby needs the more you'll make. Not sure if (but have an inkling that) this was the case with us but because DS was supplemented my milk dried up at 4 months
HOWEVER, if it's got to the stage where you need any port in a storm, don't beat yourself up about it. You want what's best for DD and that's for her to be fed and happy, regardless of how you get there. Rest assured we all know that part of being a GOOD parent sometimes is to do what's best for baby, which isn't always the romantic vision we'd spent all those childless years imagining.
Ooh, while I think of it... If DP wants to feed your expressed milk and you're wondering about nipple confusion, try the MAM Ultivent bottles, their teats are moulded flatter, like the shape your nipple goes in baby's mouth. I swore by them(after trial and error with hundreds of other bottles!).
Big hugs girl, you're doing just great.
Lara, mum to a very rambunctious 29 month-old Jake
xxx