Chemical pregnancy?

I think I’m having a chemical pregnancy. Got a vvvfl on Saturday, Sunday a *definite* line, told my husband, Monday took a digital and it confirmed pregnancy. Then Tuesday I took another first response test. It was mid morning and I noticed the line was a bit fainter than Sunday’s test, it also wasn’t a consistent line, had a few gaps in it. I put it down to not being fmu and waited until this morning to do another, thinking it would definitely be darker. Unfortunately it couldn’t be any more negative so I assume I’m no longer pregnant. I know everyone will be different, but how long until my period will start? Will it be soon or like, weeks? Just hate all the unknown and waiting, really thought this was it and feel bad I got my husband’s hopes up too even though I know he wouldn’t want me to go through this alone. 😔