confused

Brooke
Hey ladies, me and my partner have been trying to conceive for about 5-6 months now but for the last month or 2 we've just stopped trying to hard and just 'letting it happen'. My period was due on September 30th and still hasn't arrived, today being 26 days late. For the passed couple weeks my breasts have been extremely painful, just walking hurts them! They have also grown a lot! I have been having shortness of breathe and dizziness as if I'm about to faint for the past couple of days and for about a week or 2 I have been vomiting in the back of my throat  with warning and just then without warning i vomited and it came all the way up (luckily I closed my mouth in time and ran to the bathroom) none of this has ever happened before! I have taken 3 pregnancy tests, the first being around the 5th October, the second the next night and the third being about a week later. I live in a rural area and the only doctors here cost a fair bit too see so I haven't got around to that yet but if this keeps going for much longer I will be making an appointment. Does anyone know what else this could be?