Need help: feeling awful for thinking of re-homing

Hi all. First time poster here. For context I am 27 weeks pregnant and my husband dream was a black German shepherd. So we got a 13 week handsome boy and named him Severus.

Here’s the problem, we already have a German shepherd, he is my soul dog. But I am so exhausted, the puppy is stressing me out to the point I’m having panic attacks. Hes such an intelligent smart boy but tonight he’s already showing resource guarding and we train him 3 times a day, and walk/ sniff for an hour. We take good care of our babies. But im stuck in such a dark place I can’t even imagine doing this anymore. I also got a call that im higher risk pregnancy and need transfusions.

My husband said we can rehome him but I feel a gut wrenching sadness to think I would do that to this baby. But I’m so anxious all the time to make sure he’s okay & entertained and my 8 year old is safe and happy.

I don’t know what to do, I just keep crying feeling like a complete failure. If I re home am I a horrible person? I feel like the worst dog owner especially to German shepherds.

Thanks for anyone and every who comments even if it’s to scold me