N.V.
Yes, it's most likely because of lack of space in there at this point. But, make sure you're drinking PLENTY of clear liquids (water, Red Raspberry Leaf tea, etc), resting enough on your left side with a pillow between your legs, and truly relaxing/meditating since stress could also be playing a role.
Of course you should call your care provider if you're unsure at all. That's what they should be there for, to ease your worries and make sure everything is fine and healthy with both of you! It doesn't need to be a major discussion or interruption of his day, just a quick call just to make sure your concerns are taken care of.