Hello! I took in a stray in mid December and she quickly started getting bigger so I had a feeling she was pregnant. I first noticed her belly movement(the kittens) on January 24th. Last night she started having small contractions or at least what I assume are contractions? She is tightening up her upper half then releasing then about 4 seconds later, she does it again. I noticed it at 11:30pm and it is now 6pm the following day and they are still happening... they still aren't huge contractions. How long should this continue until the next stage of labor begins? I plan to get mom spayed after the kittens are weaned!