Two days late

I’m currently two days late and tested this morning but was negative. This cycle was my first time taking 50mg of clomid. Am I out ? I do have PCOS with irregular periods but my breast are tinder, backache, headaches and my appetite has gone up. Should I still wait to test. My doctor just prescribed me provera to start my period so I can do another dose of clomid. I’m scared to start the provera because theres a chance I could be pregnant... what should I do?