Secret pregnancy

My husband and I are talking about having another baby, but honestly I’m really thrown off by the whole idea. My last pregnancy (almost 2 years ago) was awful. I was one of the very fortunate 3% of women who have morning sickness all day, everyday, until the moment they give birth, I had pre-eclampsia, 2 epidurals because the first was improperly administered, and had to spend 4 days in the hospital for recovery. On top of all of this, I was under a lot of stress from HIS family. In our 3 years of marriage his family has always hated me for selfish reasons. They genuinely believe I brain wash and manipulate my husband to keep his distance from them. However, during my pregnancy, my SIL moved into our house with her 4 kids then threatened to fight me and even said the words “I don’t give a fuck if you are pregnant, I will punch you right in your fucking stomach. I hope you baby dies”. My husband made me promise I would never step foot in that house again so I had no choice but to move into my parents house with my husband while we began the process to sell out old home. Along with this, his other sisters bean to speak ill of me to ALL of the family and saying things like I only married my husband for his money... my husband and I got married while he was making roughly $4 an hour in the military, and telling him I was cheating... ummm hello, I’m literally living at home with my parents and I’m sick to my stomach all day every day, how in the world am I going to cheat. Things even went as far as using pictures from years prior as “evidence” to send to me in hopes I would believe he was cheating and we would get a divorce. All while trying to keep a baby healthy and looking for a new home. It’s clear to see I was under a lot of stress.

If I decided I’m ready for another baby, is it wrong of me to want to keep my pregnancy a secret?