Really struggling and can't cope 😢

So my story is a little long, at 5 weeks pregnant I went to the er with left pelvic pain, they did an ultrasound a 5.5weeks and said it wasn't eptopic it's in the uterus but there was only a gestational sac with nothing inside it, I had to go back two weeks later and was told there was still nothing in the sac but the sac had grown 18mm, but because the sac was 23mm they are making me wait another week for the sac to be 25mm and then they can give me a D&C. I am so depressed and upset, I am crying myself to sleep at night and can't even leave my house because I'm an emotional wreck and just don't understand why this has happend! I have been through aloy already, was ttc for 3 years when we discovered I had endometriosis and I had an operation to get rid of the problem which Isint permanent, so now my worry is that I won't get pregnant again or if I do I will have this situation again! I've tried to pick my self up and get over it but it's so hard while I'm still technically pregnant with all these symtoms and hormone levels 😢😢😢