Help am I weird/normal?????

I am not financially ready for a child. I'm not even exactly emotionally ready for that matter as there is still things I want to do before I have children. I am in a long term relationship of 5 years but im only a few months off of being 19. However I keep getting long times of feeling so broody that it makes me literally throw up because I want a child so much and I will feel sick for weeks until the feelings pass. But give it a month and it happens again and again. Is this normal as I literally cannot control it?