Hi Guys, so the kittens are almost 3 weeks old now and all growing good. I usually let Mittens out of her small room to have some roaming time around the apartment so she doesn't get bored. Well this morning she was meowing at me and so while I was getting ready for work I let her out. Well she decided to place a kitten under my bed, which was a pain to get out and so I put her back into her room. Well I came home from work and let her out and she is meowing like crazy and seems fidgety. After about an hour out, and the bedroom door closed, she found this small area she could get into the bedroom from another room and tried to bring a kitten under the bed, don't worry all are accounted for. I don't know why she is acting so odd, could she be in heat? Nothing has changed in the apartment. When I out her back in her room the first time she climbed the door, it's a screen door and she moved the babies to the other side of the room. If she is in heat when will she calm back down? What can I do to make her more comfortable?