Resting after spotting

Nicole
I just got back from my RE appointment at 7 weeks, after some spotting last week. All seems to be okay (yay!), but he gave me some interesting advice that I thought might be helpful. 
If you spot during the first trimester  should rest until 4 full days goes by-no sex, exercise, lifting anything, and resting. He told me to not work, if possible. 
I know this is not possible for most people, but I thought it might help someone out there.