Anxiety

I have a 6 month old baby boy and he’s my second child I have a 7 year old son as well and well this time around I have so much more anxiety, I don’t want to be away from him, I won’t even let his dad keep him for an hour for me to go to the store. I can’t sleep at night because I’m constantly watching to be sure he’s breathing and I just always feel like something is going to happen and I guess I just need someone to tell me this is normal..... I wasn’t like this with my first. I just love him and we tried so long to have him 4 years, 2 failed clomid cycles one was with a trigger shot and we ended up getting pregnant on our own after we made an appointment with the fertility doctor. He’s our miracle baby. Ivehad 3 miscarriages in my past too. Maybe I’m just overprotective.