I do not know for sure whether my cat is pregnant. My son has searched the internet and swears that she is. I am not computer savy so I am unable to post any pictures. I found her last December abandoned in the parking lot, I think she was maybe 4 weeks old. She is plump in the middle now and her nipples appear to be bigger and pink. I never noticed if she went into heat but I do have two male cats at home that I have not been able to neuter due to financial reasons. What are some other signs that she could be pregnant and how do you know when she might deliver?