i'm 18 and unsure of being pregnant please help!

My boyfreind and I slept together two and a half weeks ago 12th Feb. He cumed but claims that he pulled out before doing so BUT! we were both unsure. Since then i have had no period for a whole month, i keep getting pains they feel similar to period pains. but more like cramp, i also keep burping and craving for pizza all the time. My gran made me one of my fav dishes an i don't like it anymore the smell made me heeve. also i get tired ect ect i'm sure you all know the symtom.

i heard that you had to wait 2weeks before taking a pregnancy test. i took one this saturday and it was negative.After feeling over joyed i have still been having symptoms but worse, my boobs hurt slightly and i still eat loads.while burping like crazy!! and STILL no period. is it possible for a pregnancy test to say negative and still be pregnant?

please it would mean alot to me, if anyone could help... feeling kinda alone with all of this. :(

[Beccabb]

I wouldn't go by symptoms I didn't have any until I was 8 weeks pregnant and some people don't have any at all.  There is a possibility you should test again in a weeks time :)

[RockRose]

When was your last period?

[leralee2011]

It is very likely that your pregnant. I am going on my 3rd pregnancy and with my first I had false negatives like they were going out of style, I didn't even know I was pregnant with my first child because she didn't leave me any symptoms at all during that pregnancy other than the cravings and gaining a little extra weight. Generally you should actually wait for 5 weeks because that is when the pregnancy hormone comes out and for home pregnancy tests that is generally the safest time to take a home pregnancy test because that is actually when home pregnancy tests pick up pregnancy the quickest. Burping isn't an actual sign of pregnancy it just means that you are eating too quickly and swollowing air along with your food or water. One sure sign in pregnancy sometimes is that the foods that you use to enjoy are no longer an enjoyment or just make you sick. Just take a pregnancy test in atleast a couple more weeks from now than you will know for sure whether your pregnant or not.