Yup, I agree you need to rest and give your body the time to recovery. If the pain starts to bother you then take some ibuprofen since it is an anti-inflammatory. Glutamine helps too not sure how much at this point. Try to stretch the muscle and take warm shower.
My recommendation is to take Glutamine, BCAA either during or right after your workout to ensure better recovery. Waiting after the pain starts the following day makes it hard for any supplement to help. Make sure you take either a good Intra-workout supplement or Post-workout supplement as they work to ensure your recovery gets improved.