Symptoms lessening

So I’m about 6w4days today and i noticed my morning sickness has eased up. I only had it for about a week. I was sooooo sick all last week even up until night before last. Today i only feel a little queasy and didn’t throw up first thing in the morning like i usually do (clockwork). I saw the baby’s heartbeat Monday, but now I’m freaking out. I was also having some some intense dull back aches last night. Anyone else dealt with symptoms coming and going? Help ease my mind after 3 miscarriages I’m freaked out!! 😩