Awfully confused with my cycle..help!

Twinkletwinkle⭐️⭐️ • Pregnant with our rainbow baby, my most special and precious little being! Cannot wait to meet him. 👶🏼💙
So last month my cycle was to pot, my period came 5 days late, giving me a 36 day cycle. 
This evening I have had a brown/pinkish discharge, but it's saying my periods not due for another 7 days, and I ovulated last week and had sex on the Friday, (last day of ovulation).. But would mean it was a 30 day cycle again... 
Help.