What comes next?

Sarah
Hi Everyone,
I got my first BFP 1 day before my period was due after 3 months of TTC. I tested using a few different brands and all came up as positive. I am very excited but also nervous because it is so easy. I read that 25%-50% of fertilised eggs do not actually make it and that the risk of miscarriage is extremely high. What is my next step? How soon should I see my doctor? And when do I need my first blood test? (I have anxiety over needles and blood tests so I am also nervous about this). Any advice would be much appreciated. 
Thanks!