Chemical Pregnancy?

Has anyone here experienced a chemical pregnancy? I'm pretty sure that's what is happening to me right now 😢 tested faint positive for rainbow baby on Tuesday after work, but tests yesterday and this morning haven't shown anything and I've had bleeding all day today, similar to a light flow period day, with light cramps. Had blood drawn to check hcg and progesterone levels this morning. I'm just so sad. I wish I hadn't tested on Tuesday- then I'd just be disappointed again when my period showed up late but wouldn't have had this super high followed by another heartbreak...