Multiple stomach viruses- 10 in 14 months

I have had 10 stomach viruses in the last 14 months, each lasting from 2-6 days.  I am a 24 yr old female who has never had any real health issues.  I grew up in a very health oriented home, so I had very few illnesses growing up.  This change where I started getting the viruses all started after having my first child in 2007.  Her pediatrician recommended I get a flu mist (I'd never had one before), and shortly after I did, my first virus came and lasted 6 days.  Each virus entails terrible stomach cramps, diarrhea, vomiting, and chills.  Prior to the flu shot, I usually only got sick with vomiting once a year, and it only lasted 24 hours.  I used to only get 2 sinus infections a year (spring/fall) but now get them regularly (I've had two already in 2009).  My daughter seems to keep catching whatever I get, so we are both usually only healthy a week out of each month.  I am a stay at home mom, my daughter doesn't attend daycare, church nursery, or anything like that.  When we do go out, I use a cart cover and lots of antibacterial hand gel.

I buy as much organic food as possible, and try to keep away from junk foods.  I have had a full physical, gone to a gastrologist, full bloodwork, etc. and the doctors keep telling me its normal, but I know the way my body has always worked, and this is far from normal.    

I have got to change this, it seems that all I ever do is get sick!

[eannhaynie]

I failed to mention that I finished a ZPack for my sinus infection about 2 1/2 weeks ago.  I don't know if that is significant or not...