Nervous

Today my period is 8 days late and I finally got a positive pregnancy test. My period hasn’t been regular so I know it’s possible I ovulated late but I’m also having really bad cramps. Also having shoulder pain but I don’t know if I’m putting that in my head because I’ve read that can be a symptom of an ectopic pregnancy. I’ve miscarried before and I just want everything to go well but my drs office won’t see me for at least two weeks 😭 any advice? Any calming words ? I really want this baby to stick 🥺