Baby shower is turning into baby birthday

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I’m throwing a baby shower for sister who is due on February 20. However today is the baby shower and she just text me that she is bleeding and she is in labor. I never had a child... what is the likeness that she needs to go to hospital or does she have to wait until contractions get intense.

Should I cancel baby shower or see how things go In the next few hours

She said that she that she is going back to sleep so I guess they’re not terrible