Baby kerap demam normal ke, seminggu 3 ke 4 kali demam

Hmm, 3-4 times a week at 7 months is quite frequent lah, even for a baby who's starting to explore more. A few of my mum friends had babies like this, and most turned out okay, but honestly I'd suggest checking with your paediatrician soon just to make sure there's no underlying infection or anything else going on, better safe than sorry at this age, especially when the fever pattern is that regular.