I'm 12 weeks pregnant and have been having lots of nausea and thus vomiting over the past 2 months. This morning I felt like I had mucus in the back of my throat and spit it out, but it wasn't mucus, it was about a quarter sized blood clot, bright red, and my saliva was red as well for a couple minuets. It's never happened before and other than the above stated issue, I feel fine. Is this something to worry about since I've been throwing up every day for 2 months?