I am afraid that it is very difficult to say whether you are pregnant or not by the symptoms you mention.
A slight pinkish discharge in the middle of the cycle is common at the time of ovulation. Also, bloating
is quite common before periods as well as may be an early sign of pregnancy
Let us hope for the best. The only way to be sure would be to do a pregnancy test after you have been overdue for a few days.
All the best.