Should I test again?

Hi! Im a bi male and checked for STDS on January of this year and was negative on everything. I have had 2 sexual encounters with 2 different males since the test. The first one was anal sex with a condom, me being the receiving one (no oral sex whatsoever) I ejaculated first and was unable to continue to help my partner finish. The second one was also anal sex with a condom without any oral sex also me being the receiver. Except this time my partner did finish on the condom. Im freaking out because my girlfriend is pregnant and I want to make sure I’m ok. But I don’t want to pay for another test. What’s the possibility of me getting anything? Thanks