Breastfeed doubts

Ánngela🐼 • ♀💪24♒🚲🍓🌱
I am pregnant again and my first baby is 8 months now. I was breastfeeding him but when I found out I was pregnant again I felt I couldn't breastfeed him any more. Is it normal? I don't produce milk and I think it is because of the pregnancy, am I right or not? I would like to know! Many Thanks ❤💙💖