I've no doubt your mind is filled with many great stories; however, this particular one was not a comfortable read for me.
It seemed a bit choppy and confusing because I think you need to slow down expound upon your sentences in order to add the right nuance.
Admittedly, I didn't understand the plot of your story and the ending, for me, was a bit bizarre.
I've included a few things I noticed and of course they are only my suggestions:

threw her entire weight in the bed (she threw her entire weight onto the bed)
Her bed was extremely comfortable and warm all of a sudden. Suddenly an ominous feeling wrapped her entire body and made her crawl like a cockroach after being sprayed with lethal substances. (her bed felt comfortable and warm (the thought of a cockroach is off-putting.)
made her think like she had lost a battle (delete like and instead made her feel)
"Who might it be at this hour?" (too proper)
Only when she answered her phone did she recall that she had a quite nosy and unscrupulous friend. (this sentence is very awkward)

-How did it go? ("How did it go/")
-Awfully bad ("Not so good," she replied, sounding frustrated)
over confidential and passionate. (over confident)
dialogue should be presented in quotation marks