needing advice!!!

I just found out I was pregnant. 4 weeks and 2 days! Yayyy! Well today I had dark brown spotting and went to the hospital to make sure everything was okay, they did two urine pregnancy test and said they came back negative, and told me I had a chemical pregnancy. Well I got home and took a pregnancy test myself to see the results and it came back positive... WHAT DOES THIS MEAN?!?!? 😫😫😭😭