Do I believe the scale or my eyes?

It's been more than a month since I last weighed myself, and since exercising started to become somewhat painful (I can feel my bones a lot more as I lay on the ground) and I can see other physical changes that I usually don't, I thought I'd weigh myself. I only do it when I'm almost sure I've lost, otherwise I wouldn't dare.. so this time I was pretty confident, I even fantasized I'd make tiramisu and I wouldn't have to feel guilty about eating it. Turns out I gained. At least that's what the scale says. I can't wrap my head around it and it's all I can think about, I feel like I'm going crazy, I've been obsessing over it for hours (and will probably continue until I weigh myself again). My period came very late, but it's been more than a week since it's stopped so the bloating/water retention associated with it should be gone, right? Anyone else experiences this that you actually see clear signs you lost, changes in your body that even scare you a little, but the scale doesn't reflect it?