Ovulated on 20.3.15 had sex on the 11,13,17,19,20 and 22nd what are chances of me being pregnant? and can you have symptoms few days after conception?

Good chance: With unprotected intercourse around the time of ovulation, the chances of conception are good. Symptoms usually take a week or more to occur but this varies widely. Some women never experience the usual symptoms of early pregnancy, some experience only a few, and others experience them almost from the time of conception. Hope this helps.