Is It Advisable To Go With Clomid?

I am Duphaston alone..... I am done with my 2nd cycle of Duphaston and got the periods in time but they were scanty and lasts for less than 3 days... I dont think ...I ovulated last month.....this month i just ended up with my periods....so looking forward for ovulation...... as per prescribed by Doc. I hv to take DuphaX10days+Metformin (1000mg) for 3 months...last month is left....dont know when would I fall preg!....Should I go with clomid as well? ...pls advise...Thanks in advance