Could it be??

Im 13 +3 with my first, for a couple of days i be feeling fluttering in my stomach.. i been ignoring it thinking that is gas, but this morning i felt 3 kicks in a roll. It was so strong "not really" but it was enough to wake me up outta my sleep. Im going crazy thinking what could it be.. im starting to think im having twin???? So far they only seen one. Monday is mt next check up, i want to ask to check around if there another one....