unusual bleeding! 🚨🚨help 😰😰😭😭

Lusa
Hi ladies!!!
So I just want to ask a question because I'm really worried. I was placed on the hormone Norethisterone because it helped better with my endometriosis it worked better than anything else to be honest and so I tried it out for about two months then my period got better less pain, lighter flow it was the best.
So I went to get a replacement because I was running out and they gave me a three months dose and unlike the first one which I had to leave a week in between for some bleeding, this one is a back to back dose and has a lesser dose of hormones. I'm only into the first pack and I'm bleeding is bleeding normal even if you are taking the hormones back to back? 
Would love for you guys to help! x