If i had sex 2 days prior to positive opk 4/2 then again the day of the positive opk 4/4 plus again on 4/6 & 4/8 am i covered if trying to concieve ?

Different approach.: Avoid ejaculation of your partner 2 to 7 days before expected pos ovulation kit. Then have intercourse the day of positive and the next 2 days.

Yes: A woman's mature egg normally releases from the ovary within 24 hours after a positive opk. If your positive OPK was 4/4, sex in 4/2 and 4/4 would get sperm there for the egg to connect with. Sex again after ovulation does not increase your chance of pregnancy: after ovulation is over, make it about you and your partner!