Doubts..

Danielle • Growing baby no. 1 currently 5 weeks!
So I found out I was pregnant a couple weeks ago and then a couple nights back started over thinking things and wondering whether I'd be a good mum (even tho this is what I've been waiting for my whole life) and wondering whether I'll resent my baby when I give birth and all these terrible things. Is this normal? Is this apart of early pregnancy hormones or something? Or what?! I feel a bit lost and my SO just laughs and jokes about no turning back now, rather than comforting me and telling me it's all okay and reassuring me this is what we want, like I'd  want him too. Has anyone else gone thru this?? Help :(