Any ideas on what this is ?

I never spot before a period so idk what that is am 14 days late.

And ive been having back pains

It started off as a light pink sticky discharge then it got watery.

Now today it got bright red amd i had a bm and I got one clot.

This isn't my period my periods fill my pads

This is in one spot and is two little

And how ironic i just bought a test today to take in the morning