Sleeplessness - early pregnancy

I'm so tired and can't sleep.  What gives?  Only 4w2d.  Having some anxiety because I've had 2 miscarriages, but I am taking progesterone, so that's helped the anxiety some.  Got up to pee at 4am and have just been laying here ever since (it's now 5:30, time to get up for work!).  3rd night in a row w/4am pee wake up call 😥 I know how important rest is but I can't seem to get much - I barely made 5 hours of sleep - hope everything is still developing ok!  What are your experiences w/sleeplessness?  How did you deal?  Is it normal? Thanks!