First time TTC ?!?!

Brianna
My husband and I are TTC for our very first time. We are going on to our second month now. I may be pregnant right now idk I'm only 8 dpo. I've been so moody and I've been having these headaches the past few days. I don't know if that's a sign or what. I have no idea what to expect when I get pregnant. I feel like I should know my body enough to tell if I am or am not pregnant idk. I'm going to the doctors Monday just to see and ask some questions. But what do you guys think could these headaches and frequent urination be a sign of me being pregnant. I've also been gassy and have had some diahrea.