I have been having pink spotting for 5 days after my period 2 weeks ago. Am I pregnant?

That would be one possible reason for the spotting, though it could just be because of hormonal changes related to ovulation. There are many possible causes for bleeding or spotting between periods. Some other common ones are beginning or stopping oral contraceptives, low thyroid levels, vaginal injury or ailment, vaginal dryness, certain medications, or recent GYN procedures. Even stress can cause this at times. Your best bet is to visit your ob/gyn and have it checked out.