alittle confused on things.

Jessica • Mommy to a 7 year old boy Wife to a wonderful man Trying to conceive baby #2❤️
Okay. I have a question for everyone. I'm alittle confused on something. 
When ttc does the women have to have a orgasm to get pregnant? Or can she get pregnant without reaching one? 
I have a son now that is 6 and I wasn't planning him, he just kinda happened. I'm planning for a baby now and just needed to know what to do and what's best to ttc.