Dont judge me please!!

So my husband and I are TTC our second. And while we are definitely ready (as ready as you can be lol) I get nervous. That my son will be jealous and I wont be able to give him as much attention and he will feel less loved. That I wont love my second as much as him. He is 3. My son and I have a very close amazing bond. I'm terrified of losing that and or not having that with my second. That it will just be really freakin hard and I'll be depressed.