Hi ..i Have Suddenly Increased Weight At The Time Of

Hi ..i have suddenly increased weight at the time of my marriage..this is the fourth month of my married life..i had delayed my period 3 to 4 days..bt at last time i delayed 12 days i thought due to pregnancy but it was not like that..and at that tym i feel gas problems..is it have any problem which affects pregnancy..did i need to consult a doctor