Woman's advice am i pregnant, how can i tell early?

So yeah I want to know why I'm semi-bleeding two weeks before my period is due. I'm real real tired and real emotional, even more emotional than when I am around the time of my period. I've felt nauseous early afternoon everyday this week and actually...

got cramps yesterday and actually got sick on tuesday, and neither one of those normally happen to me at all ever. I'm real hungry but I just ate, and I must have peed a dozen times yesterday. My boobs feel all weird, so does my stomach and head. Normally I'd think, oh its pms but it's may 7 my last period was april 21 and I am bleeding, a little, I guess Its spotting, only it is not enough to be my period and it would be way too early to be my period anyhow. I had sex on the 1rst and the 3rd of May I believe. I'm not looking for lectures, or insults, and I know the withdraw method isn't exactly accurate but that's what was used. I don't want to think I'm pregnant, but I was at a party last night and a friend had randomly asked if I was because of the way I was acting I suppose and now I just want to now how I know for sure if I am pregnant or not as soon as possible because I can't buy a test this early I'd have to wait two weeks and I have prescription medications that say don't take if pregnant or thinking of becoming pregnant but there's no way I know of to tell if I am or not this soon and if I am pregnant I don't want to be taking any of my medicine, but if I stop taking it as a precaution until I find out whether I am or not someones going to notice and think somethings up. And I'm not all for needlessly worrying him or my parents when in two weeks I can take a test.

heres osme information that will obviously help you
you can get pregnant at ANY time of the month
if your having sex at all you should know this
it doesn’t matter what time of the month it is either
or if you just started or finished your period
you can get pregnant
the only thing that’s a 100% guarantee that you wont is never having sex
also if he comes inside you there’s a very high chance
because semen can live inside you for around 3-5 days
also the pullout method (withdrawl method) does NOT work
and there is semen in pre-cum
(released every now and then before ejaculation)
neither him nor you will notice it coming out
LEARN about sex before you go off having it
learn about as well as a male and female reproductive system
birth control, contraception, pregnancy and sti/stds
don’t have sex until you know the consequences involved with it
because the main reason why kids and teens get pregnant and get stds
is because of a lack of sex education
to find out if your pregnant take a pregnancy test 2-3 weeks after you had sex
(any sooner and the results won’t be accurate)
in the morning with your first pee is the best time
and take it when your period is due
alternatively, see a doctor for a blood test
this will both let you find out quicker and give you more accurate results

That information obviously does absolutely nothing I knew all of that already I am sexually educated and I'm prepared to deal with the consequences of my actions. Yes I am quite aware of all that jazlovestoskate, I wasn't asking for a lecture.I just want to know if I'm pregnant or not as soon as possible.

well thats nice, and I've given you information about that, at the end about the pregnancy test or blood test at the doctors