Hello.
The symptoms you had/having... It also happens when the ovulation occurs and afterwards as the hormone levels need to regulate again. That is why women should not jump to conclusions of very early pregnancy symptomes spotting just to set themselves on failure and disappointment.
As for bleeding, not sure. Sorry, I'm no physician. Did you take a pregnancy test yet? There could be many reasons or just a simple odd cycle. Trying to conceive is no easy, I know. All the stuff that is happening sometimes can leave us with no clue and worries.
Look, take a test. See what it says. Maybe you will feel safer after seeing a doctor? Or have the on-call-app. So you can talk to them and see what do they say about it.
I wish I could help more, but my own cycles are very hard to predict if it's gonna come on itself or with a help of pill to induce my period. Then with a help of a pill to support ovulation process. We have been trying recently for 2years for a second child. So far no luck. Also missed periods, odd cycles, odd bleeding patterns each single time I had one. All the worries, conclusions, tests, guesses and thinking about it did my head in. So I know what you are going through. Just keep a track of everything you can spot in case you need to go see Dr.