Mid-Cycle Bleeding

History: tried for 2 years to conceive my daughter (almost 2 now). I had very irregular cycles with no positive ovulation tests until my first and only round of Clomid. Got pregnant that first try with Clomid. I’ve had normal cycles for 6 months until my last one and the current one.

Last cycle I had weird bleeding on day 15 that lasted about 6 hours and it was only spotting. Midwife said that it could have been ovulation. I’ve never had that before. Then my period was 8 days late.

Current cycle day 14 and having the spotting again. I’ve been doing ovulation tests daily to see if my cycles are getting crazy again. No LH surge today so I’m guessing it’s not ovulation bleeding. So I’m very confused. Anyone experience this?