Talk to Gynecologist on Pregnancy(urgent Opinion Of Gynecologist)

My periods were late for 7 days so I suspected that i may be pregnant hence i took a pregnancy strip test which came out blur positive. I googled and it said to take beta hcg test and my results came back showing i am pregnant! But my sister is a medical student and she told me that my hcg is rising slowly which could mean it’s a failing pregnancy so she told me to get retested in 48 hours and i did! Now my results are back and I don’t know what to do! My sister has made me tensed and now i am worried if this is leading to failure pregnancy! Please guide me what to do!! My family is full of doctors and all of them are scaring me with such bad news!