Update/rant. Any insight?

Cycle day 33. Tomorrow will be the end of my 2nd week on Metformin. I had an almost positive opk 16 days ago. I was only testing once a day though. Lighter since then but I am still getting a second line now. Might have missed it? No ewcm. Maybe another annovulatory cycle. The reason I am on Metformin is because I haven't ovulated in 7 months and the doc suspects PCOS. My hubby and I bd the night of my almost + (16 days ago). He has low t and ED and that was our last successful Bd. :( tested yesterday. Bfn. No sign of af. Wishful thinking? Saturday I was burping a lot and had heartburn. Saturday night I slept 12 hours and was tired enough for a 2 hour nap yesterday. No other symptoms.