Stomach ache on the third day after the start that day

I originally start my period before

There is a bit of a syndrome, and once it starts

If you are sick for about a day and take medicine, it will quickly subside.

I did it.

This is the third day, and it's a bit tough.

I feel exhausted, my stomach hurts a bit, and I have a lot of appetite...

I'm worried because this is the first time I've experienced this.

It should be okay, right?