You can tell your husband that pregnancy photos are taken to leave the best memories. For women, getting married and having children is a very important experience. You can have wedding photos when you get married, so you should also take photos of your pregnancy as a souvenir. Then you can find some creative pregnancy photos for your husband to let him know that it is great to leave such memories. After seeing the finished product, your husband may not be so exclusive.
In addition, you can ask your husband why he doesn't want to take a pregnancy photo with you. I'm afraid you'll get hurt, or I think it's ugly to take a pregnancy photo. If you are afraid that you will get hurt, then you can spoil your husband and promise to take care of yourself and listen to him on the set. If it doesn't look good, show him the finished product.
Believe that your husband loves you. There's a reason why he doesn't want you to take a pregnancy photo. Be considerate of your husband and reason with him. After he understands your mind, he will be willing to shoot with you. Communication is very important between husband and wife. Mutual understanding, mutual understanding and mutual tolerance can last for a long time.