Can I be pregnant?

Dear people.

I have a very urgent question. I hope someone can help me with this. Or reply to my message.

On Jan 9, I had my IUD removed because I was suspected to have cysts on my ovaries. But luckily, there were none.

On Jan 10, I started my period, which lasted for 7 days until Jan 17.
Three days later, on Wednesday Jan 20, I had my fertile days until yesterday, Tuesday Jan 26. During those days, my husband and I were intimate. On Saturday Jan 23, I had light brown spotting that didn't even fill a panty liner. Sunday also had some brown spotting, but very little.
Monday Jan 25, it was bright red blood, so I thought my period was coming. And on Tuesday Jan 26, there was more brown spotting, but only a tiny bit.
Now, on Tuesday evening, I put in a tampon just in case, but it was still completely clean.

My concern is that my next period should start on Feb 7, and I never start with brown spotting. Plus, I just had a period that lasted 7 days.

Could I be pregnant?
I can only test next week.

Love,