God I pray that this concern Devin has is only temporary, and will not cause further problems. If it continues, I ask that You will bring him super natural healing, or give him the wisdom to know if and when he should get it looked into by Your servants the doctors and medical staff, thank You God, In Jesus Name, Amen
Sorry Devin, coffee does not normally count as a suitable fluid in dehydration, in fact it's noted for causing dehydration if coffee is in excess? Don't know where you are, but high environmental temperatures can also cause dehydration, it's been really hot in a lot of places lately, so first start out with drinking suitable fluids, like water, Gatorade, since it is a balancer, unsweetened juices, weak teas, broths, and so on to see if that helps? Some medications can also lower heart rate. May God lead you to a solution.
Arise slowly if you get dizzy.