5 weeks and symptoms

Lisa
Hi ladies,  
I'm 5 weeks 1 day pregnant. I had strong symptoms this weekend -- light headed, stomach aching, tired. The last two days I haven't experienced much of those, just been very tired at night and I fall asleep around 8pm.
I miscarried in July and I'm being paranoid. Is it normal for symptoms to come and go? My first appointment is in 3 weeks. I have been testing every few days and my lines have gotten darker. Today's line looked the same as yesterday's. 
I don't know how to not worry! At this point I'd rather have strong symptoms.
Thanks 💜