I took an ECP last week after unprotected sex as i was not fully protected by my pill at this stage. Does the ECP stop contraceptive pills from working, I had unprotected sex again but was on my pill and am wondering if I should be concerned?
No. ECP's will not stop your regular birth control from being effective. ECP's are basically a larger dose of birth control - much larger.
Daily birth control is more effective however.
Just be aware that your next few periods may be early or late AND heavier or lighter than normal.