Hmm, that's worth checking with your OB kasi usually by 1.5 months postpartum ang lochia should na light or tapos na, lalo na if you're already exercising, pero it really depends on how intense your workout was or kung may underlying issue. One of my mum friends had the same thing and turned out she was overdoing it too soon, so kailangan niya mag-rest muna before going back to exercise. Better safe than sorry na lang, check with your doctor to make sure everything's healing properly!