Confusing.....

Need to help ..... just finished my period about 3 days ago, very unusual month last month as was 4 days late ovulating according to the app, did normal tests myself just on a feeling and came up positive a few days after glow ovulation prediction. My period was approx 4/5 days late also (had my hopes up!) then got a BFN period was light/medium and only lasted 4 days maybe 3 1/2. Now today started to have cramps on right hand side so took ovulation test and the test line was medium not strong at 930 this am but not due to ovulate till next week... what is going on? Just took another ovulation test and the test line is fainter than this am. Have I missed ovulation or what? I have been ttc for a year, I am 36yrs my hubby is 43 this will be my first. Currently awaiting to go for my first fertility app in 2 weeks hubbys test came back all good. My bloods ok but some slightly low. Can anyone just help or shed some light on this as I have no idea!