Yeah, it's totally normal. Your boobs are going back to normal, so normal you'll barely think you're pregnant. I'm 18 weeks and my boobs stopped being tender last week sometime. It's normal to freak out, but try not to
Every pregnancy is different in its own way. Try not to stress because you are lacking certain symptoms. With my first, I had breast tenderness. With my 2nd, and now my 3rd, none at all. Take care and Congratulations.