High BP - why does it spike while eating?

Recently, I've noticed that when I'm eating and soon after eating my BP spikes.  I typically have normal BP but it's on the high end of normal.  But like, I said, it seems to spike while eating.  

Trying to decide if I should make a DR appt or wait till my next regular check up that's not for about 5 months.  

Anyone experience this?  If you do, what has helped?