Severe shortness of breath when resting 14 weeks pregnant

Stacey
I'm 14 weeks exactly today. 
Last night was scary for me, I was trying to sleep and suddenly had severe shortness of breath, this lasted for about 2 hours! My left arm and hand felt tingly and I felt shaky even know I didn't look like I was shaking.
I propped myself up for the night and got water but this morning I still feel the tingly feeling in left arm and hand, bad headache and shortness of breath (nowhere near as bad as last night).
Husband says I look unwell and very pale but apart from this I feel ok.  
Is there anything I can do to help? Is this normal?
I know shortness of breath is normal but I never had it this bad and not until a bit later in my pregnancy.

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