Just went to first OB appt 😳

I’m about 4-5 weeks preggers but bc of my past they saw me early to confirm pregnancy with urine and ordered HCG lab draw. Well he said my test was positive but faint. He said a little fainter than usually seen at 4 weeks. Obviously this scared the hell out of me. I went home and took a FRER and it keeps getting darker everyday! Looked like this today. Should I be worried bc of what he said about my urine test in his office? I know their strips aren’t as sensitive... and my urine was reallly clear there too... 🤔