Nursing while pregnant

Ashley • Married August 23, 2013, Mommy to Hudson, Layne & Lenyn
I just have a general question about nursing and being pregnant. My son is 8 months and I don't plan on stopping breastfeeding anytime soon. I am TTC #2 and am late on my period so I could be pregnant. How will this affect my supply? Is there certain things I can do to maintain a great supply for my son or will I just dry up? I take fenugreek daily and drink plenty of water. Any advice will be great. Thanks in advance!😊