I'm not a nice person right now....

HELP! I am 13 weeks pregnant, and I swear I have become worse than the damn devil! My mood swings are severely crazy and this Dr whom I've only seen once and wasn't thrilled told me I need to take benadryl daily to help me with it, (WTF???? REALLLLLLYYYYY)... This Dr also told me for the severe morning (all day) vomiting, dehydration, and sickness that I need to take Unisom and vitamin B6 together... I am so upset as what to do, I want to find another Dr! I tried the benadryl, today, and couldn't keep my eyes open, in result missed our family Christmas photo session, I'm heartbroken..... I was nothing like this with my pregnancy with my son whom is going to be two in February, I need some kind of support or some words, anything as my SO doesn't understand anything going on and can't wrap his brain around why I'm so mean all of a sudden, grrrrr, duhhhhhhh...... OK im sorry rant over, but does anyone have any NATURAL suggestions or ANY kind of words to help me right now, please and thank you ... sincerely one crazy feeling, mean muggin momma at this second....