Android : What's happen to my codes it appeared to be two exactly same intents?

I'm having one fragment and one fragmentActivity. In my fragment, I tried to intent the fragmentActivity. Whenever I intent back from fragment to fragmentActivity, I have two fragmentActivities. Maybe it recreate again the fragmentActivity whenever I use intent.

Initially main screen was 'HomeActivity' that hosts Fragment.

Fragment

intent = new Intent(getActivity(),ProcessActivity.class);
startActivity(intent);
getActivity().overridePendingTransition(R.anim.right_slide_in, R.anim.right_slide_out);

FragmentActivity

intent = new Intent(ProcessActivity.this, HomeActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.left_slide_in, R.anim.left_slide_out);
finish();