Oo naman, totally normal! Seven months na kasi ang baby, lumalaki na talaga, kaya mahirap maghanap ng comfortable position, a few of us in my mom circle complained about the same thing, especially sa gabi. Try sleeping on your left side with a pillow between your knees, and maraming preggy moms swear na tumutulong ang pregnancy pillow talaga, sobrang game-changer. The aches and that heavy feeling should ease up once you deliver, so hang in there, almost there ka na!