Sex throws off my pH - TTC

Hi,

After I have sex I often notice a smell, I assume because the sex is throwing off my pH balance and maybe causing BV?

Now online it says about taking probiotics but I’m on a lot of supplements for pre existing fertility issues so I’m not sure if I can take them in conjunction? And all other suggestions are use a condom which obviously isn’t possible when TTC 🤣🤣

Can anyone recommend anything to help? Or recommend a good probiotic? Or have any knowledge if they can be taken with other things?

Thank you!