2 day period or...?

Ke

I stopped taking the pill at the end of March & my periods have been 4-5 days long since then. This time around, my period seemed normal for one day (the day I started) then tapered off the second day. We are trying to conceive so I’m wondering if this could be a sign of pregnancy? I took a test 2 days before my period & it came back negative. Should I make a doctors appointment? Has anyone experienced something similar?

Thanks! ☺️