Momsh, I'd really suggest you talk to your doctor ASAP about this, light bleeding without any injury can be many things, pero better safe than sorry talaga, especially pag hindi mo alam where it's coming from. A few of us moms have had random bleeding and turned out to be minor stuff lang, pero kailangan talaga ng professional check para ma-rule out anything serious. Wag mag-worry muna, but get it checked soon ha? Take care of yourself!