Please suggest me what to do?

hmmm?.. maybe that is just hormones. sometimes, when hormones fluctuate, they cause a person to feel down, depressed and distressed. I suggest that you eat happy foods, like chocolates. This often works for me. Try to do things that you like and would make you laugh and enjoy and do it with friends, so that you can forget about the sadness. You can also try to spend time especially with your family and treat them nice and just have fun with them. If nothing works and you still most of the time feel depressed, maybe you should have yourself checked by a doctor so that the doctor could give you a medicine that can make you happy again.

Well try to talk to them nicely , treat them out for a dinner . They will forgive you once you learn your mistake ,after all they are family.