Clomid and 28 day cycle !!

Teresa • Been TTC for 3 years with the 7 Angel babies!!!
Okay I had my last period on the 23rd of May and took clomid on days 3-7 !!
​when would it be safe to test to see if were pregnant ... Going tommorow for blood work to do with the clomid ... I am nervous they are gonna tell me it didn't work even though I got all these ... My boobs are sore my face is breaking out and I am super moody ..... I took one test like a week ago and of course bfn !!! I wanna test again but worried ... Help are any of these positive ?!?! And when can I test I know about it best to wait till your late but my cycle doesn't come I have pcos and my doctor didn't want me to have a period before taking clomid just told me to say a 28 day cycle which would make me cd20 today !!