Wa `alaikum as-saalm

I would like to remind you of the hadith of the Prophet which was reported by Abu Hurairah (May Allah be pleased with him), “Allah, the Exalted, says: ‘I have no reward except Jannah for a believing slave of Mine who shows patience and anticipates My reward when I take away his favorite one from the inhabitants of the world.”‘

 

You must not obsess your mind with the insinuations of the Satan and put all your trust in Allah. A part of getting the reward after the death of your son is to be patient and seek reward from Allah and ask Him to compensate you with a better offspring. You should also overcome this crisis by going ahead in your life and getting pregnant and ask Allah to protect it and shower it with His blessings.