I had unprotected sex, and took the pill 12 hours late yesterday. I took two pills today. Tomorrow I am suppose to start the placebo pills. Should I take them or skip them?

What pill are you talking about, the birth control pill, or the morning after pill?

Birth control (portia)

Take them, you have to take them as prescribed
Why did you take two pills today?

Anytime you don't take them properly, they are less effective.
Was the two today, to make up for one late yesterday?

But the pill is not 100 percent effective even when taken perfectly. Anytime you are late taking it, or miss a pill, you increase the risk of pregnancy

As for the placebo pills, skip them if you want, they have no effect anyway, they're just there so that you stay on schedule, learn to take your pills every day, and know when to start the next pack. They have no medicinal purpose at all. But if you choose to skip them, make sure to mark your calendar so that you know when to start the next pack, especially since you seem to have a problem remembering to take your pills.