<s>[INST] hi,i am 35 i usually have a regular cycle that lasts 30 days , this month to delay my period i used priolut-nor of the past 3 days ,i am on the 28th day of my cycle now ,if there was a chance that i might be pregnant could this medicine have harmed my fetus already? could a blood test at this stage confirm pregnancy? [/INST] Hallow Dear, Primolut is a progesterone preparation. Progesterone is required to stabilize the pregnancy. In some cases where there is progesterone deficiency, we give progesterone to the mothers. So you need not worry about it. However, you are not sure whether you are pregnant or not. Moreover, you have taken Primal, so your menses will be delayed. Please do not become panicky for delayed menses. After you have discontinued the Primal, you should get menses within 4-7 days. If you do not get them even after 10 days, then you may get your urine tested for detection of pregnancy. Till that relax.  </s>