Interrupted sleep no matter the time I sleep

Hello everyone,
I have a problem with my sleeping. I've found that no matter the time at which I go to bed, I'd usually wake up in the middle of the night (Usually I'd wake up at 2-3 AM). I've come up with a few reasons for this problem:

1. My constant relapses in the past few days: I broke my 16-day streak last Thursday (during the streak, I felt amazing...save for the massive fever I had during days 1-3), and due to the chaser effect and many other causes, my streaks have been short - usually from the 1 - 3-day range. I'm still trying to get back on track.
2. The house I'm living in is very tilted (you can feel it immediately when you step inside): It leans Eastward, and when I sleep in my usual position, my head is positioned such that blood would naturally flow more to my frontal cortex, and I'd have either strange or sweet dreams or horrible nightmares at night, which would 100% wake me up.
   
3. My parents' talking in the middle of the night: To save power, my parents and I sleep in the same room. Since the room is very small, and their hearing is not very good anymore, plus they wear in-ear earbuds on full blast, whenever they speak, they sound like they carried megaphones with them.
4. My diet: Mom and Dad buy lots of sweets and treats every once in a while, and I just can't help myself. After dinner or before bed, I'd have one or two chocolate whoopers whenever they're available (whoopies? I forgot what they're called).

Which one of these do you think is the most likely reason for my sleeping problems?

 

The only "bed" to speak of here is the cheap mattress that my parents bought me, and their room is the only place I know that will save me from the nasty rainwater leaks in the middle of the night when monsoon season hits.
About the earplugs thing... right. I think I'm buying them tomorrow.
Thank you for your advice.