Some one who's had or on chlomid help please

Right so today i started chlomid so i phone the fertilty clinic up so they could get me in for a scan n they have took me of 1 tablet as the 1st time i took them i had 3 follicles and they dont like it to be at 3 or even 2 they like u to just have 1 follicle other wise there mite be complications if i concieve with more than 1 follicle does some one kno why and what the consequences is if i was to have 2 follicles and concieve thanks