Can sex lead to problems after Botox? 2 days post op.

Hi gwenwen, thanks for your question! Botox rarely produces side effects when injected by a certified and professional injector.  However, headaches, muscle spasm, bruising, redness, and swelling are possible side effects to the non-invasive procedure.  Moreover, it is possible to get a headache after sex, also called a post-coital headache, which may contribute to your symptoms.  I would consult with your doctor for more information! Best of luck! 

Botox injections can cause headaches occasionally. I don’t think having sex afterwards had anything to do with the the headaches.
If the pain continues past a week or so seek medical advice.

Headache is a common side effects after Botox injection, but it should resolve within few days and it shouldn't be severe. Sex is unlikely to provoke Botox side effects, so I think it is just a coincidence. If the headache intensity is improving, you can wait few more days. But if it is very intense and constant, I would consult with your physician. Different conditions may coexist, and headache may not be related to your Botox injections at all. So you may need to be checked. Good Luck!