Ay alam ko yan, first time mom worries talaga! Pero honestly, the lochia (bleeding after CS) can be a bit unpredictable, mine was the same, light brown then red ulit, kaya hindi ka mag-isa dito. The thing is, while it's usually normal, the fact na umabot na sa 4th week at bumalik sa red should really be checked with your OB kasi gusto nila makita kung normal lang or if there's something na kailangan i-monitor, especially after surgery.