Abnormal bleeding

It's been a month since I started taking Reviar, a female hormone prescribed for menopause symptoms.

I was fine the other day when I went to the hospital to get my medication..

Today is Chuseok, and I've had irregular bleeding all day.

I haven't heard anything about bleeding...

I'm worried because this suddenly happened.

It's not very severe, but...

I always set an alarm and take my medication at the same time... Why is that?

Please respond if you have experience with female hormones~