I don't know if I'm pregnant

So I have been peing a lot and my stomach hurts and etc and I don't know if I'm pregnant ... the other day my boyfriend came and suprise me Tuesday and I hadn't seen him in over 3 months and so he came n etc and we did it while my parents were on vacation I had the house to myself ... and I haven't done a pregnancy test cause I don't got a lot money so I don't know what do ... I don't know if I am or not please help