protected sex then period. Still worried about pregnancy

I know this is horrible to ask and im 22 years old so i should know the answer, but somehow im still worried about being pregnant even after ive had my period a week ago. It was normal, 7 days and some spotting the 8th day. my periods usually range from 25 to 28 days so not really irregular and we only had sex twice last month on the 16th day of my cycle and the 21st day of my cycle. Since it was a 25 day period this time i know that both of those times were out of the fertile window and we were protected BOTH times the whole time coupled with the pull out method before he even ejaculated and with the condom still on. had some discharge the 11th day of this cycle and since then ive been stressing that my next period wont come and that something may have happened. Any suggestions to help get over the anxiety besides taking a test? because I really dont want to waste money on one... sorry for the long post. :/