Good night girls! Can you give me some advice, please ? I'm having sha…

Good night girls! Can you give me some advice, please ? I'm having sharp pain in my lower abdomen for the second time in three days after getting up from sitting or lying down. After resting and breathing calmly, it goes away and is as if nothing happened. Should I be worried and call an ambulance? I'm going to see a doctor on the 15th (date).