Please Help Me :(

Hi po I'm a new member here. So apparently last march, i had my period for only 2 days. (march 5-6). Then, this month (April) i am delayed for 16 days already. But prior to that last January and February, i had a period for 6 days. I can't go out to buy pt to check. Tho, I checked my pulse and it's 84 beats per minute. Way too fast for a normal and not preggy person. Am I pregnant?