The burning sensation after masturbation could be due to friction or urinary tract sensitivity. Try using lubrication, practicing good hygiene, and urinating afterward. If the issue persists, consulting a healthcare professional is advisable. Your well-being is important, and seeking help is a positive step.

Combining Viagra (sildenafil) and pre-workout supplements can potentially be dangerous and should be avoided. Both Viagra and pre-workout supplements can have cardiovascular effects, and taking them together may increase the risk of adverse reactions. Both can cause blood vessel dilation and a drop in blood pressure, which can lead to dizziness, fainting, or other cardiovascular complications. It's crucial to consult with a healthcare professional before combining medications or supplements to ensure safety and avoid potential risks. They can provide personalised advice based on your specific health condition and medications.

Understanding your concerns about intimacy during pregnancy is natural. Let's address your questions with care and knowledge. Engaging in sexual activity while pregnant is generally safe, but positions should be chosen wisely. The doggy style position might not be the best choice, especially in the third trimester. Opt for more comfortable options that prioritize your well-being and your baby's. Remember, adjustments can be made for a satisfying intimate life during pregnancy. Your comfort and safety are paramount. Consult a healthcare professional for personalized guidance. Your obstetrician or midwife can provide tailored advice for a joyful and safe journey.

Experiencing twitching or movement in your penis during an erection is normal and caused by muscle contractions, especially when aroused. If there's no pain, it's generally nothing to worry about.