Hello and welcome to HCM
As per detail given by you, your pain is due to muscular spam or stretch with occurred during weight lifting. Usually Lactic acid produced in our muscle when we work out. After 12-24 hours of work out the muscle starts complaining pain. As you are complaining. Their is nothing to be serious.
Take complete rest, get hot fermentation and in severe pain
take some muscle relaxant
and anti inflammatory drugs.
This will help you in reducing your pain.
Best Wishes and have a speedy recovery