Pregnancy Risk for Virgin Girls: Understanding the Chances & Symptoms

Question
Hi.  Thanks for taking the time to read my questions.  First off I would like to ask how common it is for girls who have never had intercourse to get pregnant?  The reason I ask this is because ever since me and my bf have started doing more than kissing I am scared that I am pregnant!  I will go out and waste money on a bunch of pregnancy tests and then end up getting my period.  I always make sure that I have my clothes on when he "blows his load" but I still worry! Sometimes I will even make myself have pregnancy symptoms.  Nothing is different this month, again, I am scared that I may be pregnant my last period was may 27th and my periods are soo irregular then have ranged from 20-45 days the 45 days was a month that i was very stressed out because i thought i maybe pregnant. My boobs were hurting a couple days ago so I though that was probably PMS but since then they have stopped hurting for some reason.  Would you know why? The main reason I buy pregnancy tests is to calm my nerves.  But I have no clue when to take one this month.  Today is the 28th day since my last period so I think I should be expecting my period soon and I took a pregnancy test today and it came out negative but the last time that I think I could have concieved would have been June 14th so was that to early to take one?  How many days after conception can I take a early first response pregnancy test? That is the kind that i bought i have took 3 tests already and all came out negative, but I dont know if I took them too early.  So my main questions are How common is it for a virgin girl who just messes around to get pregnant and how many days after possible conception can I take a preg test for it to be accurate?  I'm sorry this was sooo long! I just needed to get my questions and emotions out before i exploded! But please respond ASAP! Thanks again!
- worried to death!

Answer
Hello.  I am sorry for the delay in answering your question.
You are not pregnant.  I would bet on it.  His penis would have to come in direct contact with your vagina, according to your question this has not happened.
You can take some test up to five days before your expected period.
You seem to have an anxiety problem I would like to see your address.  You are worrying like crazy.
Try to relax.  Don't take part in things that make you nervous.    When you and your boyfriend are messing around have him use protection.
Good luck to you.