PCOS & TTC

B
So I'm off the pill and have been for about 3 months. I have PCOS. Im on metformin 1500mg per day. I Got my first period about 10 days after stopping the pill. Since then nothing. I'm on day 46 of my cycle and not preg (or at least I wasn't when I checked when I was 6 days late). Dizzy, headaches, nausea, cramping, EXHAUSTED & but no period. What can I do! Soooo Over these PMS symptoms ☹️
Doc has given me clomid to TTC.... told me to wait till second day of period to start before I take it. But it's not coming any time soon😭
 Can I start that now or do I have to keep waiting for my period?