Something kinda scary happened to me

Hello ! I am a woman living alone in a studio apartment. I've been living here for about a month and a half and right now it's about 4 am here. About an hour ago I woke up to use the bathroom and realised the toilet wasn't flushed. Now I always always flush the toilet but I was like okay maybe I forgot, maybe I was thinking about something and forgot, it can happen. The problem is that I usually always use both water and toilet paper and this time there was no paper in the toilet. I am kinda panicking right now I am scared that someone might have entered my apartment during the night, I might just be exaggerating because maybe I just went to the toilet earlier in the night and forgot about it but I am really scared. My apartment is very small so the possibility of someone breaking in and hiding somewhere is quite small (I looked in every nook and cranny to see if someone is hiding, under my bed, behind the curtains, in the closet and there is absolutely no one). Another thing is that these days sometimes I would like move an object for example and forget about it and then I would get surprised when I would see that the object was moved. So yeah I might just be exaggerating but I am really scared right now. What do you think ? Am I going crazy ?

TL;DR : Woke up to use the toilet, found out the toilet wasn't flushed and there was not toilet paper inside, got scared and thought someone broke in