just a quick posting, sorry for not name checking!
re outfits, babygrows day and night, with a vest underneath, way too young for faffing with outfits, don't bother until they are old enough to be far less wobbly and less likely to need umpteen changes per day.
Re nipples, lansinoh is miracle stuff. I apply it after shower each morning and after every single feed. It really does stop me feeling at all sore, and i fed DS1 until he was 15 months and never had cracked nipples or anything else.
Re mastitis, i had it this week, think was brought on by DS2 changing his sleep/feed pattern, i started to get a bit engorged and then that meant bra was too tight...i felt uncomfortable tuesday evening when eating tea to the point i unclipped that side of my bra, and was hit by sudden shivers as i walked into our bedroom, DP ended up bringing me a hot water bottle, i then had fevers in the night and burned it out of me by the morning, fed DS2 more from that side, eg fed right, right, left, right, right, left (was right side affected). Since Wed AM the only symptom i had was the redness which gradually faded/shrunk, and its completely gone by today, so i think i was lucky. I'm by no means an expert but a few people i know have had it, and i think if you have cracked nipples you are more likely to have the infectious type of mastitis rather than the non infectious type. Infectious one needs anti biotics and there is a risk of getting an abcess which means hospital and surgery - a friend had to have that 2 years ago, ended up being in for a few days as she'd ignored it and left it quite a few days before going to her GP.
Lumpy bits is normal in poo, they often describe it as being like seeded mustard. Green isn't quite as normal, it can mean they are getting too much foremilk and not enough hind milk - might be swopping sides too soon. I remember HV saying that with my DS1 - but issue there was he had reflux and wouldn't always have as big a feed as he needed and so had lots more feeds, so more foremilk than if he'd have had less feeds but bigger ones... if that makes sense?
Re grunts, another one here with a grunty baby, does it when trying to fart, and then wakes himself up eventually.
Re baby slings, highly recommend trying them on before buying, we have 2 that seemed what we wanted pre baby, but didn't get on with either of them. The Ergo baby carrier is highly recommended, doesn't harm their hips like the baby bjorn ones and similar, i'm going to one of their legitimate stockists next Weds to try one on and see if it suits me or not (i'm short with v big boobs and a iffy back so not sure if it will be any good, despite knowing how fab a product it is meant to be, as my body shape does not conform to the norm!!)