Someone who misses you and is very confused is who. Please check out rejoicemisnistries.org before making any decisions. Leaving is always an option, but rarely the answer. I know - I left and have regretted that decision every day for over a year. I know it hurts. Getting run over by a truck probably hurts less - although I've never been run over by a truck. Just take deep cleansing breaths, go for long walks. Pray, pray, and pray some more.
If you can afford it, make an appointment with the DB telephone counselors. Give yourself some time. This is mind blowing and life altering stuff. Don't do anything rash. Take care of yourself physically. Get some sleep.