What are my chances of being pregnant? when does implantatin bleeding occur?

my husband and i are trying to conceive baby #2. been taking prenatal vitamins. last period was on june 4. dont know when i ovulate so been taking ovulation tests everyday at 3pm. had unprotected sex on june. 7 9 12 14 16 and i am ovulating today. but i took test at 3pm and had sex at around 10:30 cause my hubby came home late from work,so can i still get pregnant if i had sex that time or is my time up? and if i have sex tommorrow will i have a good chance of getting prego? also is the sex i had on june 16 good to get pregnant i mean like is the sperm still in my body? The sex tonight and tommorrow and everyother until i am suppose to get my period will i get pregnant? please let me know. really wanna be pregnant. also i am not sure when im suppose to expect period next month, and when will i get implantaion bleeding? i had implantaion bleeding with my son. will i get it again? with my son i had sex the day i was ovulating and then the next day had dark blot clood and then the other day after that had light bleeding and found out a week later i was pregnant.