Personally, I felt some light stretching on my sides during the first few weeks, but my doctor said it was normal. I just let my body do its thing without reading too much online.
They rest while the placenta takes over the baby's growth. Honestly, I was so busy vomiting and dealing with bad morning sickness that I didn't even think about my ovaries!
Ovaries basically go on a vacation and stop releasing eggs because pregnancy hormones take over. No need to stress over the medical details, just focus on keeping up with your daily work and resting when u get time.
They produce progesterone in the early weeks to support the pregnancy, but then they go quiet. If u ever feel any sharp pain on either side, please check with your gynac immediately to be safe.