Yesterday afternoon, my wife wanted to use a Ceramic Electric Stewpotn electric Dutch oven to cook soybeans.

From pictures online, this is what I could call a Dutch oven. Perhaps even a slow cooker? You can have a look too to see if that fits :)

That was the first time she had used it, so she didn't know how to operate it yet.

At that momenWhile she tried to figure it out, the stewpot was on the floor.

To see the control panel, I had to squat on the ground.

Yours is correct - this is just more natural sounding

After I did that, I started to stand up, but suddenly, my waist hadI had a severe pain in my ribs and I almost fell down.

We don't usually say "waist" for pain. Perhaps ribs, maybe stomach or chest, or if it's more general and on the side, you could say "pain in my side".

After I lay down on my bed, I could only stay in one posturn't move.

If I changed my posture a little, my waistside/ribs would hurt severely and I would get sweaty.

To achieveFor each step, I had to find a suitable posture which was less painful.

When I walked to the bathroom, I had to keep a specialfic posture, otherwise, I couldn't even stand.

I had wave had thist pain two times before.

I did the medical checkhad a doctor check it out, but there was no waist bonerib injury.

The bones around your waist would be "ribs".

I think the treatment might be only to have a while ofjust to rest.

Yesterday afternoon, my wife wanted to use a Ceramic Electrn electric ceramic Sstewpot to cook soybeans.

Thatis was the first time she had used it, so she didn't know how to operate it.

At that moment, the stewpot waslanded on the floor.

To see the control panel, I had to squat down.

After I did that, I started to stand up, but suddenly, my waist had severe pain and I almost fell.

After I lay downrested on my bed, I could only stay in one posture.ition.

Firstly, I had to sit on the bed.

Yesterday afternoon, my wife wanted to use a Cceramic Eelectric Stewpotslowcooker to cook soybeans.

ThaIt was the first time she had used it, so she didn't know how to operate it.

At that moment, the stewpotlowcooker was on the floor.

After I did that, I started to stand up, but, suddenly, my waist had severe painI felt severe pain in my waist and I almost fell.

After I lay down on my bed, I could only stalie only in one postureition.

Nice use of the word, "lay."

or

After I lay down on my bed, I could lie in one position only.

or


After I lay down on my bed, I only could lie in one position.

If I changed my postureition even a little bit, my waist would hurt severely hurt again and I would get sweaty.

Wow, this sounds really bad!

Firstly, I had to get up to sit on the bed.

This is a US alternative.

Secondly, I had to stand up.

US alternative

Thirdly, I had to walk.

US alternative

To achieve each step, I had to find a suitable postureition which was less painful.

When I walked to the bathroom, I had to keepmaintain a specialfic postureition because , otherwise, I couldn't even stand.

I've had waist pain two times before.

The first time took placeoccurred in about 2015, the second time took place in 2020.

I did the medical check, but there waswent to the Doctor's, but no waist bone injury could be found.

We don't ever use the term, "waist bone," in the US.

I think the treatment might be only to havejust resting for a while of rest.

It suddenly hurt for no reason, butecause, when I stood up, I wasdid not overexerted myself.

After I did that, I started to stand up, but suddenly, my waist had severe painI had a severe pain at my waist and I almost fell.

I think the treatment might be only to have a whileperiod of rest.

It suddenly hurt for no reason, but when I stood up, I was not overexerteding myself.