I did a cheap boots make pregnancy test 2day and it was negative. Would this be right?
A 25% chance since you had unprotected intercourse before the pill would have been effective and you have not been taking it as prescribed (therefore, it essentially has the same effect as not using any form of birth control).
A HPT is reasonably accurate about 2 weeks after possible conception. Since you have several dates when you could have conceived, your best bet would be to test 2 weeks after April 22nd (this Wednesday). If it is negative, retest a week later. If at that point you havent gotten your period and you are unsure of what to do, make an appointment to see your doctor