Hi!
It does not sound to me as though the contact that you had would be very likely to result in pregnancy. The pink discharge is more probably a side effect of the pill.
If you are close to (within 4-5 days) the time of your expected menstrual period you can do a pregnancy test. I ALWAYS recommend a test!
Usually the side effects such as nausea don't last more than 48 hours or so. The effects of the pill on your cycle can last for 4-6 weeks. Usually the cycle in which the pill is taken is NOT normal. Usually the next cycle after that one IS normal.
Good luck!
Dr B