Aches and pains along with cramps are very normal throughout pregnancy. Gas is also an extremely common symptom. You should mention the pain at your next OB appointment though - they can check for a cyst. If the pain increases, give them a call. Congrats on your pregnancy!
I am 19 wk & got those kind of pain and i still got them here and there. mostly when i sit for long time ( bus traveling to work) and so far it has been nothing...+....There will be a lot of gas my friend ..good luck!
Yes, Adgal is right talk to your doctor about everything you feel
That's normal :) Try not to move suddenly ;)