if you got 3 positive pregnancy tests then yes you're pregnant. if you want more conformation go to a doctor or clinic for a blood test.
your writing is difficult to read...however if you took a test and it came back positive you quite possibly could be...the only way to know for sure is to call your doctor and schedule an appointment
I'd say you are definitely pregnant with three positive results. The only thing left to do is get a blood test done which will confirm that the urine tests were correct.
You already told your mom you might be pregnant, why worry about telling her you took a test? If you got three pregnant results, I'd say you are pregnant, and you need to get to the doctor for a blood test to confirm.