Just need help!

So, this is my fiancé and I’s first time thinking about a baby since the miscarriage of our daughter, I am 10 days from my expected period, but am feeling like I am physcing myself out, I honestly haven’t felt good, but don’t want to think to much into it! I just really need someone to help me, the miscarriage took a huge toll on me, and now I don’t want to get my hopes up! Can someone explain a little more to me, on what I need to do to maybe not psych myself out!