Help, trying to conceive baby number 2

Alright ladies, my fiancé & I have been TTC for the past 3 months.

I had my son Jaxon May 2014, via emergency csection

& everything seems healed & I haven't had any problems.

12 weeks PP I had the SKYLA IUD put in & had it from July 2014 u til January 2015 which is when we switched to thr Nueva ring because we had started talking about expanding our family & we wanted to be able to get pregnant when we wanted to but have a birth control for the mean time.

I used thr Nueva ring until April which is when we decided to start trying

My cycle has been REALLY LONG for the past 3 months as well, averaging around 39 days.

(For those who don't know what a cyle is, it is the amount of day starting from your first period day until the day before your next period)

My last period was June 1- June 5

& according to my OVIA FERTILITY APP I was fertile June 14- June 19th

We had unprotected sex, June 14 15 & 17

& for the past 3/4 days I have had a significant amount of a mixture of creamy & clear egg white CM to the amount that when I use the bathroom a "clump" of it will fall out, & I have to wear a panty liner to not soak through my underwear.

Now my period isn't due until the 10th of July

But my ovia fertility app is telling me to take a pregnancy test tomorrow, being the anxious person that I am, I bough a clear blue easy read line test, & tested yesterday afternoon & got a negative.

Now I'm wondering if I should wait until July 10th to test!

Has any on else had a long cycle like this, while ttc?

When did you test, & how long did it take you to conceive, & when were your fertile days?!

I just downloaded this app, & it says that I was fertile from the 21-27 of June, so now I am really confused.