Help!

Hey y'all! I'm looking for some reassurance I guess. This is my 3rd pregnancy. The first ended in miscarriage. The second gave me my sweet little boy who will be 2 in February. When I was pregnant with him, I was SO SICK. That was the very first thing that came even before I took a pregnancy test. This time, I haven't really been sick at all. I'm 7 weeks and 2 days and the only time I feel nauseous is when I smell something gross. My only symptoms this time have been achy breasts every now and then and EXTREME fatigue. I constantly feel like I just ran 10 miles. I know I should be thankful that I'm not sick this time but I can't help but worry since I've had a previous miscarriage, maybe something isn't right. ☹️  Anyone on their second baby feel completely different than their first? I would appreciate your comments! I don't have my 1st appointment until January 26th so I am hoping to ease my mind a little until then.