Pregnancy

I was 4 week 3 days and doctor said she can't see anything yet and asked me to come on 1st April to scan. I will be 7 weeks plus at that time. Hoping things to be positive ..fingers crossed. Anyway,doctor said there was a black round thingy and it is the corpus luteum in ovary. I have no appetite at all.. Eating for the sake of getting rid of the nausea.. Anyone in my shoes??