My boyfriend an i had unprotected sex on saturday, sunday and monday. i had my period around the end of last month, i'm feeling all these weird things now, is it too soon to tell if i'm pregnant?

Hard to guess: It can be hard to tell if a woman is pregnant because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. A urine pregnancy test gives a reliable result if done correctly. One can test about 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period. An Ob-Gyn doctor can evaluate any persistent or worrisome symptoms.