Okay, Little freaked out here! Earthquake in MD

Something I never though I would feel and quite honestly don't want to feel again. We had a 3.6 magnitude earthquake in Maryland this morning. It felt like the ground was moving under our house. Everything shook and rumbled. No damage no injuries thankfully. I am just freaked and so is my son (lucky he felt it too, so I know I am not nuts). My hubby though I was crazy until I made him go check it out himself. Just wanted to share. Have a peaceful day everyone.