If it's your first house purchase, it will probably be a bit traumatic and panic-inducing just for that reason. I recall crying after I signed the lease for just renting my first flat- it was just the stress of doing a big 'grown-up' transaction for the first time. I'd try to park that bit of it as far as I could as 'inevitable but will pass' - and disentangle it from how you feel about the house - which you say you like of itself.
This is our third house. We had to move 100 miles from the village we'd spent over 30 years in, where we knew everyone, are were very much part of the community. We moved from a house, garden, and allotment we loved and had improved massively (but which was too small) to a larger, at that time neglected and unprepossessing doer-upper, which took 6 months to buy as the sellers wrangled their ways through the courts. Their unhappiness seemed to have seeped into the very bricks. The decor was/is worse than dated, and there will be ongoing work for us to do or pay others to do for years. We were glad the purchase went through, but I can't see I felt ecstatic on the day. And there have been times the state of it has got me down. But when we got our own stuff in here, and our pictures up, it definitely started to feel more like ours.
Two things told me we had done the right thing. One was the day we turned the car into the road and I suddenly had this little thought spring up- 'we're nearly home' (rather than just 'we're nearly there'). The other was when I was planning some work and measuring up rooms and realised just how cramped we'd been in the other house- and that it was lovely, it had been a good time, but now it was our past, and I wouldn't want to go back.
It seems you will have to move at some point. You like the house. It seems that it ticks the boxes for you. You could wait longer and find less, and still not feel any better about the idea of moving. Try not to overthink it- moving house is rarely something that makes people feel good all round all the time unless they really hated the place they had before. Above all, good luck for Tuesday. Give the house time, though- give it a fair chance to be your friend. Even our sad house is, I think, starting to feel safe and happy with us, as we do right by it and look after it after so much neglect before. I think one day it will look after us just as our old house did. And hopefully yours will too. 