I'm trying to conceive last month had my period on the 24th . this month 20th when is the best time for me to have an intercourse please help me :'(?

14th day: You are having 28 day cycles which is normal. You should be ovulating on day 14 from the first day of your cycle. That should be around may 3rd. If you want to verify it, buy an ovulation prediction kit and check it day 12-18. When positive you usually ovulate 24-48n hrs later. Also look for the watery mucous vaginally, its stringy and saliva like. Hope this info helps.