Those are two very fine Triangles. Finding the needle tips on those is almost impossible. I have thousands of Triangle Points and probably have 10 or less with needle tips. Awesome finds man!!
Are you seeing any Pottery, Bone, or Mussell Shell anywhere in the creek? Those are Ft Ancient Triangles and you may have a Midden or Village Site washing into the creek. What state are you in? May have just been from hunting too though.