Tilted uterus - First Trumester

I am a FTM towards the end of my first trimester . I have been experiencing Butt pain on the left that makes me limp at times . Didn't have a great back before pregnancy but doctor tells me this pain is because my Uterus is tilted towards my back & is putting pressure on nerves which cause this pain. Sometimes it's unbearable that only lying down on my back helps. Also my doctor tells me that in a few weeks , this would correct itself & that uterus would return to normal position & grow out as baby grows . Only that I might have stretch pains when it happens .

Any one else had / had this back or butt pain? What helped you?

And what was these stretch pains like ?

Am scared .