Aftre having a healthy pregnancy 4 years ago, after having my daughter I've suffered two misscarriages one being at twelve weeks, and the second a silent miscarriage at 8 weeks. I'm now 5 weeks pregnant and am suffering with a terrible cold. Weirdly this happened to me with my last two miscarriages, having a cold then turning into a chest infection! I'm wondering if my body is attacking the fetus inside me? Why is this happening/