sharp pain on my left side under the belly,26 weeks pregnant

I AM 26 WEEKS PREGNANT.SINCE I WAS TRAVELLING BACK HOME,I LIFTED HEAVY SUITCASES AND IMMEDIATELY SUFFERED SEVERE SHARP PAINS IN MY LOWER LEFT SIDE OF THE ABDOMEN.IT'S BEEN 4 DAYS NOW, I STILL AM GETTING THESE PAINS ESPECIALLY IF I LIFT ANYTHING(HOUSEHOLD WORK), TAKE DEEP BREATHES, BEND FORWARD OR EVEN IF I TRY TO LAUGH. PLEASE ADVISE WHAT THIS COULD POSSIBLY BE.