I don't get it.

It seems I'm the only one who makes a grunt face when I'm deadlifting.

I'm I lifting too heavy for me? is this why I'm progressing very slow on upping the weights?
I'm 5'2 about 115 lbs and lifting 150 lbs.

I see videos of people and people at the gym who lift a good amount of weight deadlifting and have a neutral face.

I'm doing StrongLifts btw.

Deadlifts are so not pretty for a girl lol, I have bruises all over my chins!!

But I love deads.