Hello and welcome to the forum. That's very scary and we're sorry you suffered such a spider bite! I'm glad you are working with your doctor and encourage you to continue checking in with them regarding your questions and concerns. Are you still taking the medication? How long ago did this happen? How are you checking your BP? Here is a basic link on what the wound from a brown recluse usually does in terms of common pattern. https://www.healthline.com/health/brown-recluse-bite-stages#immediate-first-aid In short, whether or not the bite is causing an increase is questionable. While a toxic venomous spider bite can affect the whole body including the heart, it would be for a set period of time. However, if you are extremely anxious and nervous, it perhaps can affect your blood pressure that way. Please check in with your doctor and let us know what they say. I'll be following.