First child, 8 weeks and I'm 18

Navi

So I'm 8 weeks and I have a lot of questions that I forgot to ask my doctor. When would I be able to determine the gender?

What do I do for baby showers?

How do I prepare for a child?

I've been told by this one psychic lady when I lived in New Mexico that it would be difficult for me to get pregnant but here I am. This lady also said if I were to get pregnant that there would be complications during labor. I have no idea if I should be worrying about it. I know stress can lead to complications but it's always been something that has been in the back of my mind.