2002 Chevy Venture WEIRD NOISE

I have a 2002 Chevy Venture and I noticed 3 days ago it started making this noise that was very loud as I am driving. It almost sounds like a motorcycle is behind me and it gets louder as I speed up. I just got my front tires changed today, but did not mention to the mechanic it was making noise because I thought it had to do with the tires being bald and hitting on metal, but that's not what it was because when I left the shop, iut was still making the same noise. Do you have any clue of what this might be? Thanks so much!