7w6d today and had US yesterday which showed great heart rate and measuring right on track! I was over the moon although feeling TERRIBLE. I’ve had morning sickness all day, extremely tired taking at least one nap daily, and just achy/crampy (the normal). Today I woke up and feel great. No nausea, haven’t napped or felt need to, feel total pre-preg normal. I thought this stuff was supposed to last until end of first trimester? Anyone else experience this?