I took the morning after pill , pregnant?

On the 14th july 2012 I took the morning after pill, but then it was a massive mistake because we do actually want to have a child now. Then on the 21st july 2012 I had my period for 6days 2 weeks earlier because the pill brings it forward and then I have been having unprotected sex from the 19th july 2012 and then on the 28th july 2012 I had some light red discharge sorry for the info, but then I have cramps on my lower left stomach, back pain right at the bottom and I feel really sick and specially acid in my stomach please help trying to concieve thanks