I have about 8 pillows, with 2 of them being body pillows. I make an upside down U shape and sleep on my left side. I move a pillow to go under my belly, and another to go between my legs and sometimes it helps to prop up my feet on a pillow. Needless to say, I'm a pillow fanatic lol
I sleep with pillow between knees while i sleep on side, and one kinda propped under my belly a little. Sometimes i have a little one to 'snuggle' with in arms, haha! Im only 13 weeks but Im already sleeping this way to kinda 'train my brain' so i can get used to this position for later on.