Chemical bleeding

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Hi, im going through a chemical pregnancy right now. Started spotting brown/pink friday with hardly no cramps...nothing saturday. And then sunday morning i started bleeding red with cramps. I would of been 5weeks exactly. I also took another hpt, there was a line but vvv faint. My question is...does anyone know how long the bleeding on a chemical should last? It was heavy yesterday but its eased off quite a bit and now its like a normal period. Also should i be passing any clots? As of yet ive seen no clots