4weeks pregnant

hello so I have a question I found out 8 days after my positive opk that I was pregnant 😍 in doing so I wanted to know do you think the opk was wrong and I ovulated earlier none of my earlier tests showed a possitive tho ... another thing is I've have no implantation bleeding is that normal? I'm so sick I have a head cold and this morning sickness is terrible last 3 days baby #2 but #1 is now 7years old I feel new to this haha I'm super emotional and thank God I can't smoke cannot handle it YAY I've been a smoker for 18 years so it's so great that I cannot stand the smell any one else 4weeks pregnant today 😍 what's your symptoms how are you feeling .. baby #1 I was never like this