sleep? who does this?

It started as waking up once in the middle of the night to pee. Then moved up to two. Then up to waking up at 3am and being awake til 8am and going back to sleep until 9:30-10am. Now the past few nights I've only slept 3 hrs and then wake up and can't go back to sleep. And I force myself to not take naps or if I do it's half an hour! So why can't I sleep?!?! I'm so exhausted, and I'm going on 11weeks....I just want to sleep again 😭