Ok... this is going to sound weird but

Ok I'm 20 yo. 9 weeks pregnant. My 1rst time pg. So weird the changes that my body is going through so soon in my early pregnancy; my breasts are already getting larger in cup size, they're very sensitive and it feels like even my nipples look different, feel tingly and moist. It might be just my imagination but I feel like their even beginning to produce milk? Is it possible that I'm beginning to lactate when baby is months away in my future? If they are producing milk now, why so soon? Here's the weird stuff... lol When I first learned that I was pregnant my bf went crazy wild horny. I couldn't keep him off of me all day & night long. Constantly wanting and having sex with me. Eventually he calmed down a bit and now I find myself initiating to have sex. Is this normal, weird?