What is going on?

According to glow I am 52 days late. I had a Mc in april and then had a period after in may. I havent had anything since. I am so nauseous, and have moderate lower back pain. I did a test a few weeks ago and it was negative. Idk whats going on. Im so emotional I can’t stop crying for no reason. I had really bad sore nipples last night. It was so sore I had to take my top off. Eurgh what is going on with me?): Im a wreck.