I think I've buggered it up... DD is 2weeks today and I've had no issues with supply since milk came in at 3 days. I have H/I cup breasts and flatish nipples so latching has been, well, interesting at times.
I have had problems with overnight latch and fussiness so HV suggested I express a little first to make boob less hard. Yesterday am I used manual pump and took 1-2oz off. Fed all day no worries but she fed less than previous day.
Last night leftie was engorged and hard so manually expressed but boob felt sore/bruised and DD still wouldn't latch. Tried all night but she basically fed from rightie 3 times. I now have one normal boob and one big sore one. Worried that rightie will now have oversupply die to 3 feeds on that side but I had to feed her and leftie wasn't working.
I need to express from leftie then get her to feed from that side but I'm worried that the expressing is just meaning ill get more and more milk come in 
What do I do?