Yep, your parents are teaching you responsibility for your actions, now they wont let you starve but they want to teach you how to deal with the real world as it harsh and full of bs.
I left my parents house at 17 because of being pregnant, I lost it but got preggo at 19 with my daughter and it was nice to have the advantage to being ahead of the game. Honestly things well get easier but you need to get off now find a good job and work it everyday the long you show up everyday/put 120% it will be awesome expierence to get yourself a better job.
Kids dont stop you from doing anything they can slow you down along the way but things will work out, you just need to be strong for yourself and your family to be!