The fact that they are US citizens allows them to file a petition for you. You being in the country at this time has no bearing on the case. You get in line and can expect processing in the normal manner. Check the Visa Bulletin for current processing dates. Remember to that you will have to maintain legal status or exit the US during your waiting period.

However, it is very unusual that you were granted a student visa with citizen or even permanent resident parents. I hope you were truthful in reporting this fact otherwise it could present problems for you.