My ceiling is leaking for some reason. Yesterday it rained, I think maybe some water was left behind and started leaking, but this is the first time this has happened to me, the ceiling has never leaked because of rain. So I think to call someone or not yet.

I think you should call someone, even if the plumber will not find anything, at least you will be calm. And if there is really some kind of breakage, and you did nothing, it can end badly, as due to water can easily ruin the ceiling, and this is better not to allow, repairing the ceiling will be expensive with our prices. But it is your decision, so you can do what you think is right. Maybe really just after the rainwater, although then it means that the roof leaks, which is also not good. 

It could be a leaking pipe above the ceiling, so it's best to get help. I remember living in an old house in the woods, and when it rained, because of the bad roof, we had to put buckets to keep the water from dripping on the floor. 

Plumbing problems can get out of control very quickly if you don't seek the services of a professional plumber. There are many problems that can arise with the plumbing system that can cause a lot of damage and expense to the homeowner. An inexperienced person will not understand how to cope with these problems. I recommend that you refer to plumber in chino. These specialists have extensive experience and will do everything to help you.