Good evening girls I'm 21 weeks pregnant My back is bothering me espec…

Good evening girls I'm 21 weeks pregnant My back is bothering me especially in the middle Even when I lie down and sit The baby isn't big on ultrasound it was two weeks ago Who has this too? How do you cope? And one more question What should I do about mood swings? I love my husband so much these days and he's very handsome Before he used to bother me and was terribly ugly and then...it repeats itself