PCOS AND PREGNANT

Tiffany
Hello! 
This is my first posting and I'm posting because I am worried sick and figured I'd try something different in attempt to relieve some of this stress. I got a positive test on April 4th and been to 3 different doctors . The first doc told me I was 5 weeks on April 6 , 2nd visit was to a midwife who told me I was 7 weeks on April 13 and gave me an EDD of 12/2/17 and on April 21 i went to a different doctor had a sonogram & they tell me they heard nor saw no heartbeat and that it was possible the baby was smaller than I thought. They told me it's possible I conceived a little after than what I am predicting because of my PCOS. Now I am worried sick, beyond stressed waiting for my next appointment on Tuesday for another sonogram and review of bloodwork. I've been sad all weekend because I cannot beat the thought of this pregnancy not going well ! I am unsure of how to feel and now I feel totally lost. Lost in the sense that I don't know my actual EDD and that my weeks have not been established. Although the last doctor has told me that he sees the sac and that baby is in correct place I am still unsure! There's nothing more in this world that I want then to continue this journey. I mean after 7 years of trying and having no luck and then suddenly being surprised with this pregnancy (natural no meds)   There's nothing more that terrifies me at this very moment all the questions and what ifs that I am having within. I am so confused and feel so lost.