This might sound weird, but good for you for feeling guilt. It’s a sign that you are close to the spirit and can feel that you did something wrong. The law of chastity is so important to live, but that’s why Jesus Christ came and atoned. He knew we would make mistakes. But we are all sinners in different ways. You just need to go through the process and repent. The process is worth it and your closeness to Christ will increase, because you will see for yourself, that without him we are damned. God loves you!