What Causes Bad Cramps, Nausea And Pain During Post Hysterectomy?

Hi, I m 2 weeks today recovering from robotic hysterectomy. But, suddenly the past 2 days I ve been having bad cramps, nausea and pain. I was feeling fine this past week with no problems or pain. I haven t lifted or done very much around the house. I walk around the house every hour or so. Bowel movements have been normal and no complaints of gas. I run a daycare and was hoping to go back to work in 2 weeks and will have some lifting of babies 20 to 25lbs. Do you think that will be okay. Debbie