Am I pregnant or over worried?

I had sex with a guy a couple weeks back without a condom, even though he didn't ejaculate in me... I have concerns I'm not on the pill. So here's the thing, he precame a lot went I gave him oral so I thought could it be possible for him to have got me pregnant with precum? Even tho there is an extremely low sperm count in pre cum? 
I'm scared because where I'm from you can't have abortions unless you fly over to Liverpool which costs £200  just for the procedure. I'm 16 and worried as I've been getting aches in my boobs also pains in my nipples with stomach cramps, however no morning sickness which is common right? 
Please put my mind at rest?