I've had impetigo for 2 weeks now, & the cream and antibiotics that the doctor gave me was healing it. But now it's on my side & looks like ringworm?

It may well be. It may have been ringworm all along the impetiginized, or you may have a second eruption. You can try over-the-counter ringworm Rx and/or get seen again.
Recheck. Have it rechecked or send a picture. You may have both and will need a different medication to treat ringworm. All the best and thank you.