Ay sayang, I'd really suggest checking with your OB muna bago mag-tattoo, mama! Even kung hindi ka nagbubusog, your body is still recovering and may hormonal changes pa rin sa 4 months postpartum, kaya better safe than sorry talaga. A few of my mum friends got their tattoos done around 6 months onwards once they got the all-clear from their doctors, so maybe ask yours kung kailan best time para sa iyo na. Stay safe po!