Trying to keep baby inside!

Today I went to a regular check-up and I was having contractions. I thought they were just painful Braxton Hicks but it turns out that they were real contractions(been having these for 3 weeks daily). I was sent to the hospital and was having further contractions. The doctor had to give me 2 shots to slow down the contractions. The doctor was ready to deliver but I informed her that I was feeling better. I was then prescribed Nifedipine (10 pills to get me to 36 weeks) to keep my uterus relaxed and after 8 hours I was sent home. My stomach is still tightening constantly but I am so scared to let the doctor know because I just know they will try to deliver my baby asap! So im not sure if I should just keep the pain, and tightness to myself until 37 weeks or just speak up now? Even in the hospital I told them I was fine eventhough I was still having mild contractions because I refused to have her born at 35 weeks 😓. I feel bad but I was only trying to protect my baby and keep her in as long as possible...