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Bleeding for less than 15 days between two haidh

Q: Please clarify: My haiz cycle is such that I bleed every 15 days for 9-10 days complete. and sometimes I bleed before my 10 days of haiz. In Ramadhaan my haiz completed 10 days. On the 14th day of my clean days I started bleeding again. And it continued like that till the end of my haiz period. (2 days istehaza + 10 days haiz). my query is this. My time of haiz begins at 3pm on the 15th day of my clean days. I checked before 3pm, prayed asr and only checked again after maghrib. Do I repeat the fast of this day as qazaa or is the fast valid.