Really need some advice

Hello all. So this month would really technically be the second month of ttc for me and my husband. It's been 17 dpo. I was due for af about 5 days ago. I tested on the day I was suppose to have af(which was Thursday) and no bfp. I figured I was just stressed from ttc. So I took the weekend and relaxed and no thoughts of it came about until Sunday when I got so nauseas and dizzy I could barely walk. I want to test..but I really don't want the heartbreak nor the stress. What do you lady's suggest? I've been thinking if giving af one more week and then if she didn't show I will go to my doctor. I'm honestly tempted to make an appointment now but my luck I will and I will get her as soon as I go. The biggest symptoms I've had are my nipples are super sensitive and sore and I've been getting random dizzy spells. Also this is odd to add I've been having super vivid weird dreams. I don't normally dream often so that's why I even bring it up. Any advice would be welcome. Thanks :)