Beta levels

Hi!

I got my first BFP this cycle using medicated timed intercourse. My first beta came back at a 41, the doctor told us to remain cautiously optimistic. But I am still extremely anxious about it all.

I took a test tonight. Should I be worried that the line is not completely solid? It is dark in some places but light in others. Could this be a sign of a chemical pregnancy.

I go in tomorrow morning for my second beta test.