Confused

I am on cycle day 26, usually my cycles vary between 22- 26 days. The past 3 days I have been having very light cramping on and off. This morning I have also started to get cramping in my lower back. Half expecting af to make an appearance I have been wearing pads just in case. Last night I had the tiniest dot of blood appear on my pad, but then nothing else. I have taken a pregnancy test but has been negative each time. I am so confused what is going on with my body 🤦🏼‍♀️