Dear Doc,I'm late on my periods by 11 days today,I have tender breasts,lower backache and sharp pain on the right side of my abdomen,which is more or less on and off,my stomach is a bit bloated and I have like a heavy chest,feels like severe indesgtion and I burp frequently(never burped b4).Please inform me as to what is happening and why.I'm worried and its stressing me out. Thankyou