Past breastfeeding problems and future worries...

I am currently 7 weeks pregnant with my 2nd child. During my first pregnancy I didn't have any breast pain or growth, and I feel the same thing is happening now in this pregnancy. There are no changes at all. With my first pregnancy I had little to no milk supply which I had tried EVERYTHING relentlessly to tey to increase it... pumping every 2 to 3 hrs, teas, herbs, cookies, pills, massage... everything that was suggested I tried and still had very little Milk and by the time he was 4 months old it was completely gone. I was wondering if anyone else has had this problem and a different outcome with there second pregnancy? I really, really want to be able to breastfeed. I always planned throughout my first pregnancy that I would breastfeed extensively until he self weaned, so I was devastated that I was not able to produce milk. Is there anything I can do now that may increase my chances for more milke production this time?