Is this normal?

Marta

I'm 7 weeks pregnant and this is what I found on my underwear this morning? Is this normal?

I had really bad backache yesterday and quiet strong cramps. Today I woke up with no pain at all, my breasts far less tender and sore and with brown discharge on my pants.

Should I be worried? I'm terrified to take a pregnancy test in case it comes up negative and show that I'm no longer pregnant 🥺😢