Sleeping positions

Which position to sleep? When I lay in back my stomach gets flat but I lay on my left side seem like everything is that side then when I try to lay on my right side it feels sooo weird!! Is anyone else going thru this? Is it normal to lay on your back and left side when I googled it says you should lay on your left not your right not your back??is this tru can someone explain and I’m 2 months pregnant