Hi M.,
You are right, it probably was not this bad with your first child, because you actually produce more milk after each baby. So your breast are filling more. The last few days are probably worse because your transition milk is in. Tomorrow your mature milk will be in. Sounds as if you are doing everything right, but I will give you a few more tips.
First off, if you do not have an allergy to asprin, I would 1) take 3 200mg = 600mg Ibprofern every six hours during the process. It helps with the inflamation of the milk ducts which is what is causing the pain, Tylenol does not do this at all.
2) I know this is going to sound crazy, but it works...... Go and get some cabbage and freeze it. Wear it in a tighter bra(like sports bra instead of nursing bra) around the clock for about three days. Does not make for smell, but it does work. When it becomes wilted, change the leaves to new ones.
3)Stay away from your husband during thistouch wise three to four day process. They help encourage milk production believe it or not...
4)Take some Benedryl at night; if no allergies ~ the antihistimine helps dry up the production. It works.
5)Try a bra and sports bra over the bra. If able,a sheet wrapped around the breast helps too.
6)Shower instead of a bath, but shower with your back to the shower.
7)When feeding the baby, prop the baby on a pillow and not your arms, to feed the baby. This keeps the baby from stimulating the breast if no one else is available to feed the baby.
8)Know it will be better soon. ((((HUG)))).
You may be able to still produce milk even though you are not truly producing enough to make a huge difference. I hear women all the time say, I am still lactating after weaning three months ago.... What's wrong? The truth is, just because you may be able to squeeze and produce milk from your breast, does not mean you are still fully lactaing. Some women can do this for years after weaning and some after an abortion. If they were to pump, it would only be drops there, so squeezing to see milk does not mean your body has not responded. Good luck with the journey of baby #2.