Ichy and swelling

After me and my boyfriend had sex the other day my vagina while swelled up and still is now it’s also really itching and annoying I have discharge but have had it since I first got my implant fitted,my boyfriend peinis also got really itchy and had red spots on the head today after we done it again it can’t be a sti or hiv as we have been together 2 years and I have been tested resently ,could this be a yeast infects as I know lad can get it to ??😟