A few months ago a stray kitty decided to come into my house and make it its own. My husband and i decided to keep it. Since she was not use to being inside we would let her out and she would come back. We believe in one of her outings she became pregnant. About 3 weeks ago trying to be responsible parents we took her to petco to get vaccinated. At this point she was starting to show but we were not sure. She's been growing since. But i did some research and found that the vaccines can kill her babies. About a week and a half ago she asked to be rubbed and i noticed her nipples were bigger. Now i don't know what to do. I have not seen a vet yet, im afraid they'll tell me her babies are dead. Please help!