Is my body tricking me?

My periods are pretty spot on for 28 day cycles. I am trying to conceive actively. I’ve had no pms symptoms other than emotional, (I’m always emotional 😂).

Yesterday would’ve been the start of my new cycle, well I waited all day nothing. Around 8:30pm I went to bathroom and there was some pink and I was like great... I’m out this month. Well I inserted a tampon and went to sleep. When I changed my tampon this morning there was NOTHING on it and all day today I have had no blood. What’s going on?