1 day Period, should I test?

So, I posted yesterday. I started what I thought was my period but it has been really really light compared to normal. My periods usually last around 4-5 days and the bleeding is constant, not heavy but constant. I started light bleeding yesterday evening. Mostly haven't had any blood when going to the toilet today (the water usually goes red). Slight blood when wiping and have had two or three very small clots come away. It has only been around 24 hours though and it has really really slowed up. Nearly stopped. I don't have sore boobs and if this is my period I don't feel grouchy at all. I actually feel really happy, motivated and like I want to organise and clean everything. My belly is actually bigger too. I'm pretty skinny so have noticed this. I am getting cramping occasionally but with the way it is cramping I usually get a heavier bleed, not now though. I am going to test but don't know whether to do it now or leave it a few days. If I do it early and it is negative then I probably won't bother the rest of the month and presume I'm not pregnant.

I had a bleed at 9 weeks with my first for around a day and that stopped and that led to a healthy baby.

When would you test???