Did the same thing myself on my first solo.
Too much forward pressure on the controls on landing, corrected the swerve with rudder and the left wheel came up slightly which led to my doing some "S" shapes on the rollout for a while. Frightened me a bit but I learnt what happened, why it happened and how to correct/prevent it again. They're the lessons which are the most valuable.
Carry on flying G_String, youre doing fine.
Teroc