Is this a sign that my marriage is failing?

Ok, so my husband and I met on a blind date. We fell in love instantly. Literally it was one of those things that never happens. But because there was so much magic, there also was a lot of sex. In turn, I got pregnant. So we moved in together. About a later we got married. Now our baby is about 8 months old, and we still love each other, but we bump heads all the time. We don't fight everyday or anything like that, but its more like, we don't agree with each other as much. He used to think I could do no wrong, but now we have agreed the sometimes we would like space. Now, I'm finding out that we have really big differences in how we see things, like religion, family. You know all the things that you should have found out about a person before you let them get you pregnant. I really love my husband, and he loves me but I am realizing that we are not the same as it was. Can someone tell me if these are signs of unstableness, or is it normal to experience this within the first year of marriage.