If you want to know if you are pregnant, 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.
I dont understand why you are taking birth control pills if you are already pregnant. One would not elect a period if already pregnant. If you are trying to cause an abortion this medication will not work. It does not make sense what you are doing
I would find a therapist with extensive experience in young kids and schedule some sessions.The therapist will likely observe you both in a variety of settings to understand your present level of interaction and then help you find specific ways to move forward. A kid with this level of disruptive behavior needs hands on help.
Especially at your age, it's basically not possible for you not to enjoy your body and relieve the pressure from time to time. If you've tried "heroic abstinence", you've probably discovered that within a few days, you can't even get to sleep or focus on your work. It's healthy and part of growing into adult life. If you've obsessed with erotica and missing out on life, get with your doctor.
It would be wise to have an ultrasound soon. You may be pregnant again or the surgical termination failed. If the ultrasound does not show a pregnancy, then you should have two blood pregnancy tests done 48 hours apart from one another. Dont wait too long.