Trying to gain weight

Hey guys. Well, listen, I'm really desperate. Last summer I noticed I had gain a few pounds, so I decided to take them off. I love running, so I started to do cardio almost every day for 30 min. I cut some calories and by almost the end of the vacations I looked as I wanted. I started eating normally again and stopped running. However, I kept on loosing weight! I becase anxious and depressed, I reduced my exercises and tried to eat even more. Still no results. But I kept on trying on the gym by using bigger weights. Then, by November I had sort of gain 2 kg, which I lost because of stress and a lot of exams at the same time. By Christmas I decided to try a calorie tracker, workout harder, and after all this, I see results! I mean, I have more muscle and fat, I see that in the mirror. But the scale says that I lost more weight!!! What should I do now?!
I'm 19 years old and I am 157. I'm tinny! and do almost nothing but sit around the hole day in a chair. I'm scared because I must follow the paleo diet because of health issues...
I'm not sure what to do anymore. Please help me to gain mass without getting fat. I tend to accumulate it on the wrong places (like face or neck) 😭 and I hate it.
Please, my family is too worried and so do I....

by Rubidragon via Bodybuilding.com Forums - Female Bodybuilding