Could this happen?

So with my first pregnancy I went into preterm labor around 30 weeks because I had sex, they stopped and put me on pelvic rest until 37 weeks and we have sex the first time and went into labor...I had her that next day but she was perfectly healthy. She’s 4 now and I’m pregnant with my second and I refuse to have sex. But will I naturally go into pre term labor because my body did it before? Or because of the circumstances will I more then likely have a normal pregnancy?