Symptoms easing up and I'm worried

So around 5 weeks EVERYTHING really hit me. And I know the placenta is starting to take over more of taking care of the baby in that respect and hormones might be regulating a bit but I'm scared. I got a cold earlier this week and I've vomited every morning, however my food aversions are not as bad and I have more energy than normal for the past few days. Am I just lucky, or should I be worried of miscarriage? I haven't had spotting other than two weeks ago (just light brown and not much) and no cramps