Thoughts on the way my offer was accepted please

[Derek Mizysak]

Was looking at a property and was told by a realtor it had an offer already. I decided to reach out myself to the agent to get the story on the house and was told I could submit an offer which I did subject to inspection and my walk through. This was all done through text message and seemed too easy. I’m not working with a realtor but is that legit? I’m meeting her Monday and was told as long as another higher offer doesn’t come in I’ll know by Monday. Is it safe to assume I’m the highest bidder? Looking for feedback I’m excited but also cautious as it seemed too easy and what seemed like a dead end now has life. Thanks!