Aiyooo don't worry, batuk dalam first trimester memang scary feeling, but it's actually super common and most of the time okay je, a few of us mums went through the same thing! The pulling feeling tu normal saja because your ligaments dekat perut are already stretching, bukan sebab batuk je yang cause it, so try not to stress yourself more lah (stress lagi teruk, kan). Drink lots of warm water, get some rest, and if the batuk doesn't improve or kalau you're still worried, better check with your doc, they can give you safe medication for pregnancy and put your mind at ease, sebab at 6 weeks you really perlu peace of mind more than anything. Sending you hugs!