Spermicide recommendation ?!

this guy I’m lowkey dating we’re planning to have sex. We don’t really want to use condoms, and heard about the spermicide lube or gel, I’m just wondering if there are specific brands that won’t be irritating ? And has there been anyone who used it and likes it? also he’s leaving in a few weeks by then birth control pills won’t be as effective so I can’t get those are there any other affordable forms of birth control besides condoms? Thanks !