Feeling like I don't have any support!

I'm having a really bad asthma flare and I don't have much emotional or physical support.  I needed my son to go with me to the pharmacy and store because I'm really physically ill and can hardly get out of bed.  My son accused me of laying a guilt trip on him when I asked him to go with me and it upsets me that I am always there for everyone else and it hurts that no one is here for me.  He accused me of laying a guilt trip on him.  He later apologized, but It still hurt and yes, I understand he is a teenager.  I don't understand how my boyfriend can be so irresponsible and and not be there for me like I am for him.  It hurts so much.  He lost his license awhile back because he decided to drive with an expired tag.  I asked him not to, but he did anyway.  I let him borrow the money to get his license back and also offered to give him a ride.  (I found out he had a previous ticket in another county he didn't pay from a couple of years ago.)  Now because I am physically ill and need him the most he can't drive to go get my medication, groceries, or help out with my son.  I am scared because of this asthma flare and don't want to end up on steroids because they cause so many problems with me. High blood sugars etc.  I really scared that I will never get better.  I am on and off steroids so much.