Soap burning my V?

I used soap to clean in the shower and when I got out both my V and butt holes had a itching burn not too bad but def uncomfortable. I haven’t been sexually active in quite a while and I feel like my ph may be off since going in the ocean not too long ago. It doesn’t burn when I pee and I don’t see any bumps. Does this sound like an STD or just irritation? Should I make an appt to see my OBGYN??