late period am I overthinking?

I'm late by only three days and I can't tell if I'm just overthinking or not. I had the normal awareness of my lower abdomen two days before I went to hang with him so I was so worried I was going to wake up the day of bleeding because that feeling is how I tell it's coming. I was so nervous I was going to wake up and have it the day if hanging out but I didn't and we did things when I went over and I was also worried I'd start when I was over I had that feeling so now I'm like really nervous it's late but I keep getting like the feeling it's going to start in my lower abdomen and I had a lot of thick white discharge the days before I went to hang like not creamy or clear just thick and I think that's what happened last time before I got it and I was nervous even tho I didn't even do anything. Am I just overthinking and stressing myself out?