Sush I have had diarrohea almost this whole first trimester, it probably started at 6.5 weeks. I was freaking out in the beginning also and mentioned it to the midwife who wasn't concerned by it at all. She said some girls get constipated and some go the opposite, and that it's probably better to be this way than bunged up! It might be worth checking with your dr if it keeps going or is several times a day. I stopped taking the pg vitamin I was on too as I though this might have been causing it (I kept taking the folic acid though). I was on high doses of progesterone (6 pessaries a day) so I also thought this could have contributed too. As for the gas, I've had that too!! Have taken great pride in out-farting DH for once!!

Not sure if this helps, I was worried too in the beginning but don't feel bad about ringing the clinic. It's so much better to put your mind at rest than to keep worrying.

Take care sweet!