Sick after conception?

Has anyone else gotten a cold when they conceived? It may sound weird, but with my first I was sick in bed for a week right after conception. Last week my husband and I had sex a few times during my fertile window, one of those times being on the day with the highest chance of conception. I've been sick since Monday with a stuffy nose, headaches, nausea and a cough. I googled it of course and a lot of people have experienced that before. I'm really hoping for a positive test next week instead of Aunt Flow!! I don't want to get myself too excited with hope but ya never know! Just wondering if it's ever happened to anyone else?! This is my son, Hudson who is almost 14 months.