What are the likelihood of pregnancy?

i have be on birth control pills for 5 months now and never missed a pilland everyday i pinch it at the same time...very soon i was newly wondering when im on the fourth week w the placebo pills and lets utter i take the third one but still no extent and have intercourse and afterwards the next morning on the fourth placebo pill go and get my period ...what are the probability of pregnancy when you have intercourse while on the placebos not on hormones pills .i know that they read out its safe to fo it on the placebos but what do you reflect on..if you have experience near this situation better.thanks contained by advanced
Answers:

Is there`s any way that creates spinal column the hymen which is already broken?

If you've been taking the pill exactly as you're supposed to and not missing days at a time (it's ok if you don't whip it the exact time,but as long as you take it that day) afterwards the birth control is effective and you're fine so no business when you have sex, you're protected. That's the purpose of it one BIRTH CONTROL. The week before and the week after your period are your least fertile time. In the middle of your cycle is when you're most fertile, but since you're on the birth control you're not ovulating at adjectives - that's how the birth is being controlled.

Need to release.?

50 50