Nausea improved at 9w3d and I'm freaking out!

From before I even got a positive test, I have been extremely nauseous all day every day. I'm currently 9w3d and have lost 6kg/13lbs because I just can't eat. Today I woke up feeling so much better - still nauseous, and my boobs are still tender, but was well enough to actually eat a meal. I'm trying so hard not to freak out and assume it's because I'm about to miscarry (I've had 3 mc's in the last year) and this is the most pregnant I've been.