Female cats who aren’t spayed go into heat quite often. They go into heat seasonally, and several times during the season. It happens every 1 to 2 months, more or less. Each heat usually lasts several days, but it can be as short as one or two days, and as long as a week. The heat cycle will be different depending on how long they were in heat. It is recommended that you can neuter your cat in right time.
More details about the adavantages of cat neutering: https://petzoo.net/forums/topic/what-are-the-pros-after-neutering-cat/