Hi I had issues with breastfeeding my baby at daddy 3. She had lost 11% bodyweight and was very jaundiced. On day 3 we were admitted to hospital for her to have phototherapy for the jaundice. I pumped but only got 5mils. To this day I cannot get any milk out through pumping after successfully breastfeeding her until now (she is 16 months), I am still breastfeeding her and did so exclusively until starting weaning at 6 months.
Her jaundice lasted till 8 weeks when the April Sun washed it out of her. I never supplemented, just fed fed fed. Her latch for the first month was terrible and painful, I ended up bleeding quite a lot and using nipple shields for a couple of weeks from when she was 1 week old. Not good, avoid if you can, but without them I'd have been unable to feed through the pain.
As long as there are plenty of wees and poos (check kellymom for how many poos to expect), and baby starts gaining weight again soon (it's normal to drop weight at first), is alert when awake etc, I'd crack on. So glad I did, the jaundice too is normal as long as baby is otherwise well. They called it breastfeeding jaundice.
My confidence grew and grew once her weight started piling on again, and especially when at 3 months she was a little fatty, all down to me! If latching is an issue, both get naked for skin to son, lie her when calm asleep or awake on your chest like that (no clothes either of you), she will surprise you by shuffling herself down to your nipple and latching on. This is how I got my baby to latch on best, but she was a dodgy latcher on and off for a good 4 months.
Call la leche league for help if needed. I saw a lactation consultant too who was fab but costly. She built up my confidence though which was what I needed. Sounds like your silly Midwife has dashed yours! Good luck xx