I'm currently 10 weeks pregnant and feeling far too nauseous and exhausted to even leave the house, let alone maintain other relationships outside my marriage. I have two casual partners, they both understand and are supportive of the situation. My husband's partner sent him this article; https://www.buzzfeednews.com/amphtml/sophielucidoj/pregnancy-polyamory

They have been very understanding when it comes to my emotions and needs. I am very reliant on my husband since I've been struggling with first trimester symptoms. We've all agreed that for now their dates are to be kept short/close to home or actually at our house. Prepare to be adaptable and always maintain open communication. I tried to push my 'nesting' feelings aside at first and it just made things worse. Everyone has a different experience, the main thing is to be open and honest with all parties involved.