Unfortunately parents don't get any training in being parents, except their combined experience of growing up with their parents, which can be good or bad.
I would suggest trying to talk to them rationally, ask direct questions and see what they say, if you become a parent, you will find it scary.
They most certainly should love and support you, do you make it easy, or difficult for them to do so?
This is something you all need to work on together, not all parents know all the answers, you try to help them, and you may find that they find ways to help you?
same. I can't tell my parents about my scars cuz their reaction will be very scary.........