Hi, I Am 30 Yr Old, Married. I Was On

Hi, I am 30 yr old, married. I was on oral contraceptive dronis-20 from December 2014 to may 2014. My periods flow started getting affected. My last periods was on 29th April. In may I took last pill on 20th may. I didn't have any periods. After tests I found out my hormones were not normal. My pregnancy tests were negative. Then doctor ask me to take regestrone 5mg 3 times a day for 5 days to regulate my periods. Medicines got over 4 days back and still I didn't have my periods. In the period I was taking regestrone I had unprotected sex too.

My worries are how to regulate my period cycle and secondly, can I get pregnant while on regestrone n having unprotected sex.
Please help I'm really worried.