So im 18, have never gotten a handjob, blowjob, had sex etc. Im worried about premature ejaculation. When i am masturbating to porn it only takes about a minute sometimes less sometimes more. With out porn it takes about 1.5-2 minutes. i feel like this isn't normal at all, and that once i have sex that i'll last like 30 seconds and it will be embarassing!
Time for masturbation and time for real sex can be very different. For some people real sex is faster than masturbation, but for others it's much slower.
You might try to train yourself now to delay ejaculation using th stop-and-go method. Ineligible is right, however. Masturbation and sex are different and can result in different times to finish.