my husband and i removed a superficial attachment to our second-story front porch (stair structure leading to the bottom floor) and closed off the porch about 6 months ago. the stair structure bore no load for the porch and the posts for the stair structure were barely 1.5 feet in the ground in concrete. recently we have noticed that the floors in our home, particularly closer to the front of the house where the porch is, are creaking a significant amount, we're hearing cracking throughout the house, and i am noticing cracks in the walls that may or may not have been there before. even though the stair structure did not bare a load for the porch, could this be settling due to a change in the external structure of the home? should we call a structural engineer to take a look or would a general contractor suffice? thanks in advance for any advice!