Eh, tu yang pelik tu, normally kalau no appetite, weight goes down, bukan up! Kena check dengan doctor, sebab naik 2kg setiap bulan while losing appetite tu boleh jadi hormonal issue, thyroid, atau ada something else going on yang perlu proper check-up. A few of my mum friends yang mengalami benda sama, doktor dia check blood work and found out something yang easily treatable, jadi jangan delay ye! Kena tahu sebab dulu-dulu I also thought "eh, makan sikit je tapi naik weight", turns out ada imbalance. Go see your GP or klinik, explain the whole picture, and hopefully dapat clarity soon, mama.