this question is pretty weird sorry !

Wendy • My hubby &I have been together for 3 years now. &we are finally TTC our first 👶❤️ Pray For Us!💙😇 TTC as of Feb.25.17
So I'm totally new at this so idk if this affects me in getting pregnant .. I'm very petite .. 5'0 is my height and I weight about 105 .... I'm 21 ..... can my weight affect me ... do you guys think I need to gain a few pounds .... ??? I might sound dumb but so many things running through my mind ... ?!