Scared! Worried! But excited!

Recently found out I was pregnant and doctor thinks I'm around 6-8 weeks gone I have first mid wife appointment on Friday to see exactly how many weeks gone I am. This is my 1st but all I can think of is bad thoughts is this normal? It doesn't seem real and I just feel like something bad is going to happen but at the same time I'm not with my ex and we've been trying to talk and be adults and get along but yet he's being really immature and falling out already and now I'm more scared and worried because I think I'm better doing this alone 😢 I have great support from my family and friends but still he's stressing me out already 😢 my emotions are all over the place and I'm starting a new job tomorrow 😢