I am on my second month on the ortho tri cyclin pill and I missesd one of the pills on the first week of the pack (the white ones). I took it as soon as I remembered and then took the following one at the regular time (doubled up). Thing is, I had un-protected intercoarse with my significant other the following day. I had just finished my period 3 to 4 days prior. Should I be worried about possible pregnancy? Should I seek the plan b pills? If anyone could help me with this i'd appresiate it...The uncertainty is killing me...Ignorance is terrible!