Dealing with an injury can be difficult. It’s important to have it assessed by a professional first. Once the Dr days your ok to workout. You should enter back into a routine slowly. Don’t let it stop your motivation or take you away from your goals. If it feels like a muscle pull do some stretching, put on a heating pad or some Lakota, if you notice some bruising around the “pull” it could be a tear, that bruising is excess blood pooling at the spot of the tear. This is when it’s very important to see a Dr. Even if it’s a pull, but it doesn’t go away after a few days of home treatment. Seeing a dr is a good thing, better safe than sorry.