Low readings

Hi, any advice welcomed. This morning I had 4.8 fasting level which is great, I had my breakfast around 8.50 , and after an hour I had 4.5 reading, which is lower than the fasting one (never happened before), pricked another finger 4.4 .. worried and bit stressed right now, I now ate some dark chocolate maybe it doesn’t go lower.. happened to anyone this or is something wrong with my placenta? Had scan thursday though and everything went well, today is Sunday and diabetes team are off the weekend, which pisses me off , I’m so over with this diabetes thing and stress just making my pregnancy worse 🤬😤