Hello!
I definitely think you could be pregnant! I wouldn't put too much on 28 or 34 days. Even if you are looking at one or the other, you can still get pregnant a few days before or a few days after you ovulate. 28 and 34 are so close together that the date of ovulation wouldn't make much of a difference (again, since it isn't only one day out of the month that you can conceive, but a few days in either direction).
Having said that, if you are, I know you have said that it would be horrible if you got pregnant. I wanted to share something that is happening in my own family and what the outcome has been. My little sister is 21 and just got married in August. She was on the pill and was busy moving to another home and forgot to take it. She took it later and followed the directions (don't have sex for however many days it says). Well, turns out she had sex a few days before she missed the pill and so she became pregnant. She was DEVASTATED. She didn't want any kids until later in her marriage. She thought everyone would be upset or grumpy about it. She was sad and felt like all sorts of plans had been ruined. Well, she's 22 weeks along now and found out that she is having a girl, Avery Mae! She is the most excited Mommy ever and never thought that she would have wanted this baby at this point in her life. Not too many pregnancies are planned and most of us have felt like you when we thought or knew we were pregnant and the timing wasn't right. Babies come when they come and when they get here, we can't imagine what it would have been like without them.
Keep us posted because we all want to know how this turns out!! Hugs!!