Ok so on the 2nd of December me and my boyfriend had sex using a condom and I am also on the pill. I used the pill correctly all month and did not miss one at all. I recently had my withdrawal bleed, as normal from the 4th to the 10th of January. However I have been extremely sick with the cold and vomiting since the 9th of January , especially in the morning and I am now worrryinf that I could be pregnant? I have also expriences the symptoms of thrush, headache, backache, sore breasts which is also making me concerned. My withdrawal bleed is usually 7 days long and this time it was 6, could someone give me an answer as I am sick worrying?