Hello, I would be happy to help you with your question.
While the chance of pregnancy
is definitely a consideration, if you had conceived 2 weeks ago, it is unlikely that you would be having pregnancy related symptoms this early. So, in answer to your question, no I do not think that these are signs of a pregnancy.
In addition, it sounds like you might have a yeast infection which can be treated over-the-counter. When you pick up the yeast medication, get a pregnancy test as well and check now and again in 1-2 weeks. If your cycles remain irregular, contact your doctor!
I hope that this helps and good luck!