Why am i so emotional right now?

So my boyfriend said he doesn't want to talk to me right now and was hoping to hangout with him all day today or yesterday but he wouldn't either days and I also had other things going on like my grandma probably having cancer, ex best friend accusing me of something I didn't do and calling me names, being sick, worrying about being pregnant (which stopped after getting negative pregnancy and and stopped getting symptoms) but I'm supposed to get my period tomorrow. I literally started tearing up in the car after telling my bf how I'm upset that I didn't get to hangout with him