Second baby

So the very few people we have told and general jokes about whenever we have a second baby have always been that our second baby will be a terror due to our first being a very good baby (she is 19 months) I know these comments are being said in jest and I laugh them off but I am a little scared and worried about having another.... There are so many worries going through my head! How can I have more love to give, i's abit scary. What if I don't love it as much? What if I love it more than my first? What if my first doesn't like the new baby? What if it is a terror? The thoughts going round my head are crazy! I'm 5 weeks and 4 Does anyone else feel the same?