Bleeding during TWW while on progesterone?

Ju
I am 6dptrigger & 5dpiui today. This afternoon I had bright red bleeding after wiping. Not pink, not brown, not mixed with the endometrin...bright red. 
Has anyone had his issue before? 
Im kind of hoping that its cervical irritation from the progesterone suppositories, but I'm assuming this is not a good sign. 
Any insight is appreciated! 
TIA