Hi. I Have Had An Umbilical Hernia For Over 2

Hi. I have had an umbilical hernia for over 2 years now and hasn't caused me problems since recently. I am required to lift heavy things at work but usually nothing over 45 pounds, but last Wednesday I lifted a bucket that was 70 pounds and was in serious pain. I went to the hospital the next day and they said I had an abdominal wall strain. My major concern right now is debilitating pain that last for about 30 minutes that happens 3 or 4 times a day and I've had diarrhea since that Wednesday. Should I be concerned?