Planning ahead, during TWW

I feel like I am in a super weird headspace. I had an embryo transfer on Tuesday of a 4AA embryo via modified natural cycle. I know that the chances of success are between 40-60% depending on who you ask, but I know so many people who recently had failed FETs I am finding myself already planning ahead should it not work. This is making me feel badly because I don’t want to manifest a negative result, actually I wish I was more excited, but I just am feeling maybe a little apathetic and wondering what my next steps will be if it doesn’t work out. I know feelings are not facts and my lack of confidence doesn’t mean it won’t be successful, but wondering if others have ever experienced this?