First pregnancy jitters

According to the app I am 4 weeks 5 days. I was completely shocked that the test was positive I bought two other brands to check. We have been TTC for almost two years and we're about to be referred to a specialist. I am to afraid to tell anyone but I have so many questions. My OB appointment isn't until 3/27 which feels so far. I have been having some cramping which I read is normal but at times it is sharper on my right side. I don't want to be one of those patients that calls every second something goes on but I just want everything to be ok. Anyone experience anything like these or have any advice?