Period is two days late

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Have had a on time period for 3 months last month tracked my ovulation which happened exactly when glow guessed. I had sex on ovulation day. I had a gush of discharge around a week before period and now sore breast and cramps I keep thinking I’m starting my period because of the cramps and nothing 2 days late. I took a blue dye test it was starch white negative I took this at like 5 pm I would think I would see some type of line by now. I’m just really confused cuz I feel like I am on my period with my cramps but not bleeding. Any advice? I’m just guessing my period is coming soon cuz I don’t think the test could be that negative at this point.