Hello. Do you mean you had an abortion last month? If so you should know you can get pregnant straight after, and it can take as long as 6 weeks for your next period to come after. It will be too early for a HPT, and results after an aborion can be unreliable from HPT for 8 weeks after, and you should have been told than after a misscarriage, abortion or birth there is a higher chance of getting pregnant. Since you have taken the emergency contraception, assuming you mean you took it right away you are probably alright, but I would suggest taking/ using a longterm form of contraceptiive if you don't wish another pregnancy. The cramps may just be a sign your period is coming, you should have been told periods are not always regular after an abortion. If you don't get your period in a few weeks and are still concerned about pregnancy you can either do another HPT or go see a doctor for a blood test.
I am not judging but remember abortion and morning after pill are not birth control methods.