Have been feeling gassy and constipated, facial pain with nasal congestion, difficulty in breathing and headache with body pain in forearm and back. I recently tried to have sex, but could we used a condom there was no ejaculation and no penetration. I took pregnancy test 3 times: first after 7 days second, on the second day of missed period and third on the last day of missed period all came out negative. (I have irregular periods where I skip months) *Am I gassy becuase of a sudden change in my dietary habit? *Am I pregnant? *Do I have viral infection? *How long does it takes for Gastritis to heal? * Does it pain in your chest when you are gassy? Have been eating Pan D and Deviry 10mg