I can't sleep well at night and having odd dreams daily.what can I do.

Please meditate, relax, of possible try to do breathing exercises. Read books, listen to music, this helps a lot

It's common especially in early weeks of pregnancy. Stay calm, pray well and sleep.

Its just the body experiencing new things. So.. body is getting adjusting to those refulx, harmonal changes etc. You can chant some mantra and sleep.