She may not display heat symptoms normally. Delilah showed them for about a week, then was normal for a week. And as a first time cat owner... and first time female pet owner (all my pets from the time I was a baby were male), this was frustrating and scary.Thanks for advice. I spoke to the vet. Who said see how it goes and if it happens again in 3 weeks after this cycle ends. My Sukie is driving me mad howling to get outside, she is always out playing. The 3 toms are outside day n night waiting for her. Its such a long time to keep her indoors, several days. Only day 3 today. I.m tempted to let her out. I.m pretty sure she cant get pregnant. But not nice to watch 3 cats at her taking turns. She got out y.day quickly when I opened door to garden.I.ve hose pipe ready but she cleared off 3 hrs . I.m like a prisoner in my own home. This is reason why I had her spayed a yr ago. Marilyn n Sukie.