Clomid/metformin help

So I’m on metformin 500mg 3x a day for pcos. And did my first round of provera/clomid. My period started July 24th and started 50mg of the clomid on the 28th for 5 days. Then sex 2x a day for the next week. My period is 2 days late (which is normal) but I’ve been having symptoms of pregnancy, nausea, mood swings, tender breasts. But have been testing negative. Are those normal things to feel after taking clomid ? Metformin ?

My other question is, do I start my next round of provera and clomid?

TIA for the help