My 1.75 year old falls sick like every 2 weeks. I am tired and worried.

She is 3 months short of 2 years. Born with 2.55 kg. Currently 8.5 kg. Very active. Goes to daycare. Very fussy eater. Our first and (as of now) only child. Has fever like every 30 days and some other sickness (stomach upset, cough, cold or had motion) like every 2 weeks. Please help. Should I be worried? What can I do ? via /r/Parenting http://ift.tt/2lhz6Hx