For me, the gas never really stopped. I started getting it around my 7th week too and now I'm on my 20th and it's like every time I do something a little gas slips (sorry tmi). I was told things you eat will cause most of it, but if you take gas pills you may want to make sure with your doctor first. Some gas pills will cause intestinal issues and can be harmful to the baby. (according to my doctor)
you are gassy because your uterus is growing and because constipation which is very common in pregnant women I suggest that you should take gas pills it really helpes a lot
Is it something your eating? I know onion makes me gassy when im pregnant. Just try eliminate the foods that could be causing it. Things that dont effect you normally can mess with you while your pregnant. Hope it goes away for you soon :-)