Tips on how to get a sleep

Hi mommies! 12 weeks preggy here and I'm having a really hard time getting a good sleep. During the past weeks of my pregnancy, lagi akong natutulog but for some reasons when I entered the 2nd tri, its really hard to get a good sleep. Sumasakit na ang ulo ko kakapilit matulog pero hirap talaga! If you have tips pano kayo nakakatulog agad during this stage, kindy share....