Pregnancy symptoms???? Extremely gassy and indigestion

4 days worth of extreme gassy bloated feeling and abdominal distension, slow bowels with minimal bowel movements passed daily, very slight nausea. Any one had this as a pregnancy symptom????? Had gastritis before and was not the same and never lasted that long. Ttc for 10 months with PCOS. Intercourse almost daily... Period comes when it feels like it :( BFN saturday evening- 4 days ago. Thank you!