I am four days late, can i be pregnant even though i had my tubes tied for 3 1/2 years now?

Late period: Not likely your pregnant. However, do a preg screen anyway. Most likely you had an irregular ovulatory cycle and will get your period later than usual.

Not likely : Your tubes are tied but there is no need to guess. Take a test. In today's world you do not need to wonder if you are pregnant or not based on symptoms. Pregnancy tests are available at any pharmacy and in minutes you will have your answer. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period.