I've always wanted to have a maternity photoshoot

My husband is a great photographer. He takes photos of anyone/anything he likes for free but he rarely took photos of me (once or twice lang). I have wanted to have something before our baby comes out.. just a simple maternity shoot. I asked him to but he did not responded. I can't help but think that he thinks that it's a waste of time for him. I felt jealous because I've seen that he took great photos of his ex before. :(