MS is getting the best of me.

Yesterday I went to an appointment and my husband accompanied me.  The lady that I was seeing asked me some questions that I did my best to answer and my husband turned around and asked me " Are you feeling o.k.?"  His question didn't imply concern but embaresment. Now I didn't realize until that point that there was anything wrong with me besides a headache and that I was appearing out of it. But his question ticked me off because as I said he asked it like he was embaressed which of course made me upset and I snapped at him.   The interviewer said I seemed like I wasn't feeling o.k.  and I  let her know that I had a headache and she offered me some ibuprofen. When do you let people know that you have MS.  Should I have just told her that I have MS and excuse me if I don't seem right.  My husband was no help.  It really hurt my feelings that he was trying to "carry me".  Because MS effects my cognitive abilities there are times when I appear out of it.  I don't know how to correctly answer a question or I may stumble over my wording. I might not understand what I am being asked or process information.   What can I do?  It makes me sad.  Today I am depressed.  Is it my MS or is it my present circumstances or is it both?  I don't know the difference.  Do I need to get help for my depression or just wait for it to pass.  I don't know.  I feel like I am a burden on other people and I just want to be left but I can't be left alone, I have kids to take care of.  I hate feeling like I'm having a pity party when things could be worse but I can't shake these feelings away.  I feel helpless not knowing what to do.  Maybe tomorrow I will feel better.