Sue, I am so very sorry about your cat. I'm in the same boat. My Boxer, Abby, has lymphoma and has just come out of remission after her second (and final) chemotherapy protocol. There's really nothing that can be done now, and it's a matter of weeks before we will have to put her down. I'm already seeing signs of illness, and it is simply heartbreaking. Abby has been with me all over the country through so many duty stations. She's picked me up when I've been sad, seen me through a heartbreak, my parent's divorce, deployments... everything. And always with unconditional love. She is my "fur baby." I've been a basketcase the past several days, and I feel like I can't go more than a couple of hours without crying. It's just awful.
And as for the baby, I had the SAME worries with my last pregnancy. Even around 23 weeks or so, one day I would feel a lot of movement, then the next day, nothing. I panicked one afternoon (coincidentally the same day that the war started and my husband was deployed) and rushed to the doctor's office to see if he would find a heartbeat for me. Everything was fine, and he reassured me that at this stage, they are so little and perhaps he had moved into a position where I just couldn't feel that much. I hope it's the same with you.
Again, I'm so sorry about Kitt. I know how you are feeling. I pray that we will both be strong for them, and have the strength and courage to know when it's time to let them go.
DS-Evan, 7/19/2003. Mild PE at 40 weeks