Honestly, at 18 weeks baby movements are still super light and inconsistent, most of us don't feel proper kicks until around 20 weeks or later! So it's hard to say if mood affects it at that stage, sebab mungkin you're not feeling much yet anyway, especially if first baby. But I'd say stress and being in a bad mood can affect your body, your cortisol goes up, breathing changes, so indirectly maybe baby feels that, but it's not like baby intentionally kicks less because you're moody, kalau faham apa I mean. Best to check with your doc how your baby's movements should feel at this stage, sebab setiap pregnancy lain-lain. Stress is bad for you though, so try to rest and calm down for your own sake ya!