Redness in your right eye along with a headache on the same side could be due to a few different reasons. One possibility is that you may have a condition called conjunctivitis, also known as pink eye, which can cause redness in the eye. The headache on the same side could be a tension headache or even a migraine. Sometimes, eye strain or sinus issues can also lead to these symptoms. It's essential to rest your eyes, apply a warm compress, and consider taking some over-the-counter pain relief for your headache. However, if the symptoms persist or worsen, it's best to see a eye specialist for a proper evaluation and treatment.