No overwhelming love????

My baby is 5 months old and I love him and would do anything for him, but I've not had the moment of 'wham' love that everyone talks about?! 

I had a great pregnancy and labour, a great marriage and circle of family and friends, so nothing else is wrong in our life just now, other than me beating myself up that I don't love him enough as I should..... Does anyone else feel this way?? 

I'm not a lovey person, I don't say I love you to anyone, not even my husband. We don't think it's something that has to be said, we think you should know if someone loves you without having to hear it all the time, but I heard the love you have to your kids is different, but I'm not feeling it.