Is this probably just caused by fatigue?

Basically, I started seeing my boyfriend in July. At first I was extremely attracted and gushing when I saw him. I felt nothing can get in our way.

However for the last month since I moved into a new house share, I’ve not felt the same. I’ve had no sex drive even when I’m alone, i feel tired all the time and wake up feeling tired, I feel irritable around him and less attracted to him and kissing feels like nothing . I even feel less confident around most people and have lost interest in a lot of things

I keep worrying I’m going to stop being attracted to him, i don’t even want sex currently and kissing feels like nothing :(

This all happened since I moved into a new house share. It’s a very cold dark house and they won’t let me have the heating on. I don’t sleep well and keep getting sick. It’s only 48 degrees Fahrenheit (9 degrees Celsius) in my bedroom . I have a little space heater but they get so annoyed with me having it on