Hi I was wondering up to how long can nordette delay the Mc?

I had sex Oct 25... The Bf didn't come inside... Supposed to have my period on the Nov 2. Was cramping and got tender swollen breasts, with a bit of bloating a week prior.

Then Nov 2 we had sex again but wasn't able to culminate.. He did try to insert it a couple of times.

I took nordette 2 days after my delayed period. Got cramps and nauseous a lot. No withdrawal bleeding yet.

I am currently 8 days delayed. Has slight cramping and light brown spotting.

I get negative PTs too. So I was wondering if this is a side effect of the ecp I took.

THANKS SO MUCH IN ADVANCE.