older child syndrome

Anyone else worried about their only child becoming not an only child anymore? I've noticed in the last month or so my daughter has gotten so clingy. She was always great at sleeping in her own bed and now there's not one night that she won't get into our bed. Sometimes it's as much as 3 times a night. It's getting tiring for us to keep putting her back in her own bed! It's literally only been happening in the last month! And she's been asking to sit on my lap at the dinner table and always asking me to pick her up. She keeps saying she's a baby! Bless her!