Antibiotics and Birth Control

by Nikki
(Sheffield)

I was recently on antibiotics (penicillin)and I had unprotected sex with my boyfriend, about 3 weeks ago. I was still taking the pill as normal. However I recently read that the pill might be ineffective whilst on antibiotics.

Since then I have had incredibly swollen, sore and tender breasts (they usually swell up before my period, but not to this extent). I feel as though I have put on some extra weight, I feel exhausted even after having 10-11 hours of sleep and I am very moody and very sensitive at the moment. I have had no blood spotting the past few weeks, however a week after I would have conceived, I had period pain like stomach cramps that would last for 10 seconds, then disappear. I have had short spells of nausea the past week or so. Today I ate a slice of pizza, then an hour later when I sat near the plate it had been I became incredibly sensitive to the smell of it and it was enough to make me feel sick. I still feel sick now, 3 hours later.

I took a pregnancy test 2 weeks after I would have conceived but it was negative.

And today i got my period, which is within the usual cycle, and it is not heavy nor light. I 'feel' pregnant though, and I'm so confused! Can these be false pregnancy symptoms?