4 wks preggo and stressing out after a chemical

MT
I just found out I am pregnant. I had a chemical in March, so I am freaking out about this one. I had a bit of implantation bleeding (the brown kind), but it was very little. Other than that, no symptoms.
How do you keep yourself sane in these first weeks? I take pregnancy tests everyday, to make sure it keeps getting darker, even though the nurse told me it is unnecessary. My doctor won't do blood tests in my case, since pregnancy tests has already confirmed it. My first appointment is in 3 whole weeks!!!
I just need to relax, but any little pain or mucus freaks me out. We plan on going to the zoo this wknd but I'm afraid walking that much could be harmful. I know I'm being silly, but stil...