About my weight gain (I was very slim before pregnancy and always fear…

About my weight gain (I was very slim before pregnancy and always feared gaining extra pounds. Naturally, I gained some weight during pregnancy, although I lead an active life. I really dislike myself because of this, but I calm myself by thinking that I will be able to take care of myself after giving birth. But the problem is that I have developed a lump on my neck, I'm afraid it won't go away. Has anyone experienced this? How did they get rid of it? I read that during pregnancy, getting rid of the lump is better not to do, but they say it's difficult after getting rid of it. In general, I'm struggling with something... )