Hi Georgiebabe
You and your baby have been through a massive trauma. It’s very normal to feel the way you are feeling and, I think, for your son to be more clingy and much less willing to explore/practice skills. I know this from experience - my baby was in PICU too (with septicaemia). He’s almost 15 now 😊.
Reliving some of that time can still bring me to tears - it was so incredibly stressful - certain moments in particular.
I also believe that it was a really traumatic experience for my son - though he’d also had several others too - having been born 10 weeks early.
He was still pre term (though we had been discharged 3 weeks before from nicu) when he had his PICU stay - so young that I couldn’t tell/didn’t know that he was affected. But I think he was. .
It won’t be anything to do with leaving his side (we did the same) - but I firmly believe the life threatening experience babies can’t interpret but still feel.
With hindsight I wish I’d known more about emotionally healing from trauma. It would have helped me (and therefore my son) a lot.
My advice would be - you will both heal best from this experience through accepting it for what it was (very traumatic) and being gentle with yourself. Possibly seeking some therapeutic help if you feel you would like it. The nightmares now will probably pass with time, but if you continue to have those, and your worries continue for more than a few more weeks, maybe finding someone to help you process the experience (a therapist) might be worth considering.
Go with the clinginess - respond to it by keeping him close - it’s your babies way of showing that he’s still fearful of the experience he’s had and he needs to be close to you. Get support for yourself if that is feeling really hard to do. With time, I would expect your baby to feel safer again, and be really to explore and learn some more. If you are interested, you could read more about babies attachment behaviour and the impact of trauma on people generally. I think people don’t really understand the impact on babies yet. All I can say is that from my experience, there is an impact, and soothing parental care is the way to heal that.
Hope that helps a bit. Take care xx