Hay sis, I can totally feel your worry kasi ganyan din nangyari sa one of my mum friends, she stopped pills abruptly and her cycle got super off para sa ilang months, so it's actually normal kahit nakakanerves talaga. The good news is negative ang tests mo, so likely dahil lang talaga sa disruption ng pills, kaya ang body mo is trying to regulate ulit, pero honestly, I'd really suggest you get checked with your OB para ma-rule out everything at ma-ease ang mind mo, kasi the guessing game is the worst part, no? Pwede rin nila i-check kung kelan ka talaga mag-expect ng next cycle based sa your current hormones. Fingers crossed for you, girl!