Feeling lost and irritated

Im a 28 year old woman and have been married for over 4 years and with my husband for a total of 7 years... lately everything in my life seems to bother me I am always moaning and complaining about everything and never seem to be happy or content with anything. I seem to be losing my patience with everything around me and I hate myself for being like this... I am unsure of whats wrong with me and dont want to do anything stupid because of the way Im feeling... all i feel to do sometimes is run away and have another life and not look behind me.. I feel so bad because my husband is always trying to make an effort lately as I think he is seeing that Im reaching a point where I am on the verge of giving up and he is scared to lose me.. I feel so bad because he is a very good person and im just finding that im losing myself and not knowing where to go or what direction to take.. I am not sure if a child would be the solution to my feelings or what I should do... I feel that because of the fact I have lived in his life for soo long I am starting to want to live my life more..
I am currently career lost and financially lost and just feel like im not in the mood for anything or anyone. I hate being around people lately because I dont want to affect anyone else either. I feel like a zombie just working day in and day out doing the same things day in and day out... I am creative and full of energy and am not doing anything to release this side to me either.. Instead i am working in an office and I feel trapped.