I had sex with partner and he used condom but I was on a lot of meds for infection I also used a oil base lubricant in my vagina to make me wetter could I be pregnant

We do not have an ob/gyn on the site, but you can receive answers to your question.

Anytime you have sex, pregnancy is possible. If the condom was used correctly, it lessens the odds. The oil-based lubricant can be an issue depending on what the condom is made of. It is not recommended if using a latex condom.

The meds may or may not play a role, it depends on what you are taking, the same for the infection, but they won't offer any protection as birth control. They may, however, play a role in how your cycle responds to you being ill.

Basically, you will have to wait and see what happens when your next period is due. If it doesn't show, try a test.