Mamsh, I'd definitely suggest checking with your OB about this, yung combination ng dizziness at weakness after period, especially first time mo magkaroon ulit after giving birth, ay worth getting checked kasi maraming factors pa rin (anemia, blood loss, hormones pa rin nag-adjust pa lang) at better safe than sorry talaga. One of my mum friends had something similar at turned out she was anemic from breastfeeding pa, so doctor lang talaga ang makakaalam ng talagang nangyayari, just go for a quick consult, walang hassle!