I am shocked that no one is commenting on the validity of your fears!
I just bought a house in May and have been driving my fiance nuts because I am obsessed with the certainty that the market is going to crash and all my down payment will be lost! He keeps telling me it is irrational and irrelevant, we can afford the house, it is nice, good neighbors….
Take it from me after having taken the leap it doesn’t get any easier. In fact I am now systematically “destroying” my new home. I took a sledgehammer to the 30 year old kitchen because I freaked and am now having to pay for a new kitchen. Hang in there, you are justified and right to be afraid.