Note the following:
1.Death is not the end of life but rather transition from lower level of life to the higher one. There is a strong correlation between this world and the hereafter. The real life begins after our departure from this world. Allah’s love and mercy will be more there than what we see here in this world.
2. Allah Created us for the love He has for us. He is perfect and He Created us for perfection. Nothing in this world will go astray.
3. Note that your feeling is not something negative. Go back to Allah ( Salat, Zikr, etc ) as the feeling become more. You will be amazed how this feeling will turn into peace and tranquility.