early pregnancy symptoms

I have a wonky cycle that seems consistent and then randomly isn't, I'm trying figure out if I might be pregnant even though I feel it's too early to tell. I did the calculations on a due date calculator and it was accurate on when I would have conceived however with both my previous pregnancies I couldn't get a positive test until close to 5 weeks so I can't test yet since I'd only be about 2 weeks along. I started having all these symptoms that could be just getting ready for my period but are so strong I was in bed sick all day yesterday and that's not normal for me. Another reason I can't test yet is that last month I got my period a week early and now I don't know if I was supposed to start today or next week. I have had a lot of months where I thought I might be but wasn't. so I'm just wondering if anyone can tell me if you started having symptoms as early as 2 weeks and if they involved excessively sore throbbing ankles and wrists? I don't mean like I overused them, I mean like hormonal achy, sore feeling. I've felt dizzy, very sore breasts, exhausted, nauseated, super sore ankles and wrists, frequent urination and terrible heartburn, although the heartburn could be very unrelated.