Hello there, I’m a week late on my period but now I’m getting cramps and I’m getting a lot of dark red/brown blood. Does this mean I’m pregnant?

I had protected sex a few weeks ago, we were sure to wash our hands before doing anything penetrative and made sure the condom was clean as well. We checked and there were no tears, but I missed my period and now this so I’m worried. I plan on getting pregnancy tests soon but I wanted to see what other people thought about it first.