House cleaning

Sarah • 25 years young. Married. EDD: 8-1-2017 with baby number 2.
I was cleaning a house for work and I started to get these really sharp pains in my stomach. Like a quick stabbing feeling. 
I am 4 weeks 6 days. What do you ladies think? 
Are cleaning products really harmful to baby? How to you clean your house or do laundry?