Needing support or maybe some positivity??

So around a year and a half ago I had a blighted Ovum. I ended up miscarrying naturally around 5-6 weeks. It was extremely devastating for me and took me a very long time to try to put behind me. But now found out that I am pregnant again. I am around eight weeks today and found out on April 8th that I was pregnant. The only thing that I’ve ever wanted in life is to be a mom. So when I found out this time I was extremely excited but nervous because of the miscarriage that I have had before. I just sometimes feel disconnected from this pregnancy or like I don’t want to get myself too excited because I’m just so nervous that things are going to be like last time. I have my first ultrasound on Tuesday and I initially wanted to go by myself because I’m just the kind of person that if I’m going through something bad I want to go through it by myself. But it’s not fair for my fiancé to not go. So he’s going to go with me I’m just extremely nervous but wanting to have the ultrasound done at the same time. I have had minimal pregnancy symptoms like sore breast, mild nausea, very minimal appetite, minor nipple changes but besides that nothing major. So I also get nervous that I’m not having enough symptoms going on with my body to have a healthy pregnancy. Even though I know you don’t have to have any symptoms to have a healthy pregnancy. I tell myself that being negative or feeling down is not going to get myself anywhere. So I try my best to stay positive but it’s just hard because I don’t want to have to go through the heartbreak again of having another miscarriage. I just want to be a good wife and mother at the end of the day. Does anyone else feel disconnected or less excited because they’re nervous of a miscarriage again? Or am I just overthinking everything and I need to stop being such a negative person? Just needing to vent I guess...