So much anxiety!!!

It's day 1 of my missed period and I can hardly keep it together. I remember having cramps one of those days leading up to my period so I didn't make note of it. Yesterday (when my period was due)I saw a small clot as if my period was coming so I thought I would wear a pad overnight just incase. It didn't come and I have not missed my period in almost a year. My boobs are not tender for the first time in veeeery long time.

I'm planning to take a test today. When would be the best time?