Ahhh bitter taste tu memang common dalam early pregnancy, especially around week 7! A few of my mum friends went through the same thing, one of them swore by sucking on lemon sweets or ice lollies, another one said drinking cold water dengan mint leaves helped mask the taste so she could actually eat properly. Try cold, sour, or minty things macam you mentioned sejuk2 dengan manis, and maybe ginger ale or sprite pun boleh help refresh your mouth between meals. But lepas a few weeks usually this weird taste thing will settle down, so don't worry, it's just one of those annoying pregnancy quirks! If the bitter taste doesn't improve or you're struggling to eat enough, definitely check with your doctor okay, just to make sure everything is fine