Anxiety? Something else? Need advice...

I dont think i have PPD- i am not depressed at all, love my little one to a fault!!! I am an extremely happy all around person. HOWEVER, Is there such a thing as Post Partum Anxiety? I feel the opposite of PPD - like that i love my LO so much that i am terrified of something bad happening to her! I see danger in everything now & run thru scenarios in my mind what could happen & how i can prevent it or what i would do if in really tragic situations that involved her & how i could get her out/save her. For example we are going on a plane next week, i think of what would happen if our plane crashed and how/what things could i do to ensure she is as safe as possible & has best chance of surviving. Is this just "being a mom" (i.e. Constantly worrying/wanting whats best for your child) or is it something else? Has anyone else felt this way?