TTC missed period, spotting and light bleeding.

Frustrating. This is the first time i have ever tried to concieve. I have 2 children with my ex husband 9 and 7. With both i knew i was pregnant before i got a positive test and with my son i thought i must have been crazy because right when i was expecting AF i bled for 2 days, but i still felt pregnant and my AF has never been less then 5 days unless pregnant. Turns out about a week later i finally got my BFP. Now Im on CD 30 and thought i was going crazy again because even with all my symptoms ( nausea, bloating, gas, moodiness, fatigue, hot flashes, constant flushed cheeks, aversion to smells/food, and sore breasts) when i started spotting CD 27 i assumed here we go. Then i bleed medium all sunday dark red/bown blood not enough for a tampon but too much for a pantyliner so i went to buy pads. No bleeding overnight and very small spotting monday. Today nothing. Took a test this morning BFN. Have you ladies ever experienced this. A friend of mine called it breakthrough bleeding.