Ignore it, as it is not your menses yet. Your fasting is valid, in shaa Allah. Stop only when the flow of the blood begins.

i was expecting menstruation and having whitish secretions since yesterday. now 1 hour before iftar when to make ablution again i went washroom and checked the secretions got slightly pinkish (red+white) no actual blood drops. since its only 1 hour before iftar what is best to do? continue fastIng plus also make up for this fast later or will this fast be valid and counted?

Fasting, Menstruation and post-natal bleeding | June 9, 2017 6:07 pm
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If a person gets cheap tickets for trip to Istanbul during the month of Ramazan and he skips fast because of travelling and tiredness. So is it allowed for a person to skip fasting?
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I had sex with my wife at night in the Holy month of ramadhan saying I’ll take ghusul bath early morning before Fajr, only to overslept and wake up after Fajr,is my fasting valid?