Help! To all the other mothers!

Darcy • I have a 2 year old daughter named Ha'ani. She is my everything!! Going on baby #2 38wks Due 10/3/2016 👨‍👩‍👧💍
Mothers out there idk what to do. My 18 month old daughter is very clingy and I think it's cuz I'm pregnant with my second. Either that or it's because she has just stopped sucking on her thumb. She has a hard time sleeping unless She's like hugging me or have me hold her all night. If I don't she cries. I need advice.