BC for 10 years... TTC

I was on BC for 10 yrs and had (brownish) spotting 7/8-7/9. Then I took my last poll on 7/10 and had only one day of period which was on 7/13 and the days before were brownish spotting...then it stopped. Which is not normal. We are TTC and we have had inter course several times after my period even when it said I was fertile. Based on glow I'm not suppose to start until first week of August but due to being on BC so long I don't know if that's true. I have been having mild cramps (not period cramps), boobs more sensitive (which during AF doesn't happen), major increased appetite, and mild nausea off and on, more emotional, and mild headaches. I've started taken prenatal with DHA a few days before the spotting started. By the way this is be my first time TTC  so I am so lost on symptoms and what's normal or even when I should test.