So I had my period July 10-14. My husband and I had intercourse right before I started and then on the 17 and 21 according to my app I starting ovulating 18-23. Then I got a period again on the 24 well I was spotting with brown discharge.then nothing until the evening of the next day(25) I began to bleed light and then regular 26-28. Today it seems its ending. In between all that time starting after my first period I have had nausea off and on and 2 throw up spells not to mention light cramps and sore boobs. Also lower back pain. During this second period I had no bad cramps or bloating at all. Am I pregnant.