My wife had period in October 16 and after sexual relationship she doesn't has period next due date. Due to heavy work load on village as women suffer in day to day life and got a light period in November 28 and it's lighter and little bit discharge all day long no blood present in period and it's stop around after 7 days. When first period stop we test a pregnancy test in kit and found it's negative. After second period we also did a pregnancy test in kit and it's negative. Now the problem rises that mild nausea occur and sometimes feeling like going to commit and her lower belly bigger than before and feeling heavy and awkward and change in mood rapidly. And breast are paining around 3 days. please say something and give me directions to treatment well if something happens.