Had Protected Sex, Getting Pink Color Discharge Instead Of Period. Am I Pregnant?
So to summarize:
1. You are 21 years old
2. You are sexually active (assuming you use condoms)
3. You apparently did not have a period in the month of February
4. You had protected sex on 2/13, 3/3 and 3/9
5. You are noticing some abnormal spotting / brownish discharge
6. You still have not gotten your period
Well, you imply that there might be some irregularity in terms of your cycles. This can lead to skipped or late periods as well as abnormal breakthrough bleeding. Also, if you did use backup protection, then that combined with irregularity in terms of when you ovulate make the chance of pregnancy extremely small.
Regardless, you need to:
1. Do a urine pregnancy test now and repeat in 2-3 weeks
2. If the current pregnancy test is negative, then you need to talk with your doctor about 'inducing' a period using progesterone
3. You can take advantage of a visit with your doctor to talk about birth control and hormones as a way of regulating your cycle
I hope that this helps. Please ask if you have additional questions.
So take this as food for thought and consider my prior answer as well. Good luck and please provide feedback!