I'm constantly sick...this is my first time being pregnant and I can't stop crying!! :( my back is…

I'm constantly sick...this is my first time being pregnant and I can't stop crying!! :( my back is already sore and I have leg pains and I'll only be 7 weeks on Monday! I just want the sickness to be over. threw up like 6-7 times today and my stomach is so sore from it. :'(