age-20, height 5 ft2, weight 8 stone 7 pounds, recently trying to conceive for 6 month. last period was 2nd of june lasted 4 days usually have a 28 day cycle. My period was late but i have now started to bleed but its lighter than a normal period, high temperture, twinges, tired all the time, sore breasts, lower back pain and occasionally feel sick. Could I be pregnant?