7 weeks and I feel miserable :/

I am so happy to be pregnant but this last week has been awful. I feel miserable, I've tried a lot but nothing seems to be helping. I have an appt with my doctor Wednesday so hopefully she can make suggestions but I am wondering what worked for others! I have nausea (really bad - it hardly goes away throughout the day), vomiting occasionally, and constipation. I was prescribed Zofran (not really helping), taking Vitamin b6, I'm drinking ginger ale, getting SO sick of saltine crackers, taking a laxative/stool softener, drinking lemon water.  I think all the symptoms combined is why I feel so awful. Trying to stay active and rest but I feel it's so hard to exercise when I feel like I am going to puke! Help with any suggestions, I really appreciate it !