Fear of my death my loved ones. Now.

From childhood i usually hear the word tat am a strong fearless girl, she will over come everything in her life. I usually dont cry tat easily or get nervousness or stage fear, i always laugh tells joke make others laugh.I was a positive person who never worried. after 2015 i started to change, i never felt changes before but now a days am started to know tat, fear of my death as u have 2 little kids 6month old and 2 yrs old. I dont have anyone else other than my husband to take care of my kids. He is not that responsible one too, he agrees tat too. Fear wen celling fan rotates fast, wen car rides fast, i stopped driving, wen my kids run along, i soo scared of my death,all negative thoughts are there with me, easily getting intense angry. even to my kids.I getting cheat pain and left hand mild pain and chills, dry throat, palpitations, wen i lift heavy things middle of the chest but it no tenderness for last 2 months i checked with cardio he said am ok with my heart. am a mess now..