Sleepless night on 1st Trimester

I experienced the same thing too. Soon after I found out in first trimester, I started having problems sleeping at night, even though I wasn’t feeling any discomfort at all. I really had no idea why. It was very torturous. It’s getting slightly better now in my second trimester. Now I will wake up once in the middle of the night, but am usually able to fall back asleep, and clock about 6 hrs of sleep (in my first trimester I woke up so often and could not fall back asleep easily, that sometimes I only slept 2-3 hrs in total). I make up for my lack of sleep with short naps in the day now.