I am new to this forum and just want to say hello?

I'm Holly, my son is 21 months old. I am here to see if i'm doing the right thing with my son since i'm a new mommy and sometimes i wonder if i'm doing everything right. So my far my son is very happy and bright. He is talking, walking and is a very happy kid. Sometimes i just wonder if i'm completely screwing up my kid. My confidence isn't very high. I'm tired a lot of the time and i'm at home with him all day while my husband works. He is a fire fighter and sometimes he's gone for days at a time and i'm just at home with just my son. I have lots of friends and nice neighbors i just get so stir-crazy when it's hot outside. The weather is never that nice here because it's always so hot. He gets into everything and can't seem to play by himself. if i leave the room for 2 seconds he starts to cry and will run after me. I feel like i have a puppy following me around 24/7. I think today i am just very tired. does anyone else ever feel like this? I would love to connect with some people on here and get to know people with kids my sons age. We can share their development...maybe we are doing something right!