Membrane sweep at 38 weeks

Hello ladies, I just got my membranes sweep. My doctor said that I am still 1/2 cm to 1cm. She said I was pretty closed so she did the best she could to sweep me! She said I am 50% effeced. What to expect after this sweep? And what are something to do to make it effective? I am not having contractions but I'm having more like light period feel! Thanks