My 2 year old hates when I hold godson or any other child for that matter 😩

I’m currently almost 6 weeks pregnant. Planned and conceived via IVF.

However recently we’ve noticed my son who’s 2 HATES when I hold my godson who’s 8 months old or any other baby for that matter. He actually waved his finger at me and said “no no no mommy....” it literally broke my heart. He’s such a mommas boy and I’m nervous he may think I’m abandoning him or have major issues when the new baby comes. I also have a 10 year old from my first marriage who currently is living with his dad and Colby, my 2 year old loves him. However, anytime I hug or kiss Max (10) he comes and wedges himself in between us. Has anyone dealt with this? Any advice? Positive outcomes?? I’m freakin out a little bit. Here’s a picture of Colby.