Constipation, Gas troubles and tummy troubles in early pregnancy ?!

I am currently 7 weeks pregnant and I have a hard time "going" . I have been this way since I was 4 weeks pregnant . I have been eating more fibrous foods like yogurt and fruits .. I have been drinking sooo much water because I'm avoiding caffeine all together . I'm really avoiding all of what I used to eat (takeout and fast food sometimes twice a day). My diet is very good. *Sigh . My gas cramps are so bad at night , sometimes they wake me up in pain. All day every day I feel backed up and not well. My stomach for the last week always feels empty even when I have just ate. I burp all day long , these little burps . I have tried some ginger tea today and it helped a little bit on my stomach I guess . I'm all messed up and it ruining my days , anyways feeling awful! I have tried everything naturally I can think of . This is my first pregnancy , any suggestions?