Confused😕

Jar
Okay my bf & I are TTC. I'm on day 3 of my cycle. I'm so confused on counting, logging & tracking my information😔 I truly know God will bless us with a baby in his time though. All I'm saying is I should know my body better than this. I'm 30 years old and I had a tubal reversal surgery February 12, 2016. Idk when I ovulate?😳 last month I did the whole digital ovulation test, which said I was fertile like 9 days in a row. Who knew trying to get pregnant would be overwhelming😦 I guess my questions are: 🙄when would I ovulate if I started my period March 26th? 
When and how often would we have sex?