DD and I had a lot of early difficulties with bf and had to express for the first 5 weeks until she was able to latch on. Even then, she only ever fed from the right breast (for 20 months).
Maybe because I wasn't using it, or maybe because I continued to express for 5 months, the left breast would literally gush throughout a feed on the right. I mean to the extent of soaking through several folded muslins or towels. This made it really difficult to feed while out and about for many months (which is why I expressed, so that I could bottle feed if necessary). I was also unable to feed lying down as milk just gushed everywhere. BF clinic, although marvellous in every other way, couldn't find anything to help, although I did use a breast shell to collect some of the excess while feeding and added this to pumped milk. Shell needed emptying several times during a feed though, which upset DD a lot.
I know this is a minor problem compared to many, and I'm really hoping to get next baby latched on properly early on. I'm 36 weeks now and have been leaking colostrum from both breasts since about 20 weeks. I get through several breast pads each day and night. I think there's a valve missing or something!
So sorry it's so long. If you've made it through and had/ seen anything similar, suggestions would be welcome. Toddler DD this time too, so feeding out and about will be crucial. Can't see her letting me faff about with messy breast shells either!