I have lower abdominal cramps. i am not sure if i had too many guavas or is it an early sign of pregnancy. i also had sex on the third day of my period and my partner might have had a pre-cum. is there any chance of pregnancy?

Pregnancy possible: Neither withdrawal nor intercourse during your menstral period are dependable methods of preventing pregnancy. Check a urinary pregnancy test and use condoms or other dependable method of contraception if you are going to be sexually active and don't want to be impregnated.

Not likely: The chances are very low for pregnancy as described. You should ask yourself some hard questions right now, however, such as, "am i ready to be pregnant and become a mother as a teenager and change the course of my entire life?" that is really what you should be asking with your risky sexual activity. This type of question has already been answered far too many times. Enough already please.

Even if chances of: Becoming pregnant are not high in this scenario - you are none the less putting yourself at risk. Use protection every time if you wish to avoid pregnancy at this time.