NETHER PORTAL PROBLEM

In my survival world I did 2 nether portal far from each other and when I entered my second nether portal I was teleported to my first portal in the nether basically my nether portal aren't generating properly when I make to portals in my world. And resently in this new beta every time I get out of the nether I don't appear in the same portal I entered(It created an new portal only for me to appear in the overworld)