3 weeks pregnant? Polyps?

Auna

My doctor told me I have uterine polyps and I was supposed to have them removed next month? I took two pregnancy tests yesterday and they came out positive? I would only be about 3 weeks pregnant though. Is it possible to know that soon? I don’t even know if the pregnancy would be successful I’m nervous about miscarriage. I’m so in denial and I don’t think the tests are right. Any advice?