sharp pain on my left hip. 12 weeks pregnant.

Hi lovely community. Ive been having this sharp pain on the left side of my hip. Somewhere in the middle of my left butt area. Every time when I stepped on my left it'll shot a sharp pain that made me go ouch out loud. Occasionally I also have lower back pain. I'm small and petite. My tummy isnt really showing that much and my weigh havent gone up yet so I'm just wondering, should I be concern about this? Seek professional help or what? It's getting worst day by day. As in the sharp pain is increasing in frequency as well as intensity. It can even make me go limping for a while after a sharp pain attack. =(