Hello Doctor, Have Been Married For 4 Months But Really

Hello doctor,
Have been married for 4 months but really scared of sex because of the pain.

I purchased xylocain spray 5% to numb my vagina.
am worried at trying because I don't even know if it will work well.

Secondly how do i know it's really numb

Thirdly will I feel it when the penis is entering my vagina.

How many times am I supposed to use the xylocaine spray to numb my vagina

I need help.