Hello and welcome to Healthcare Magic.
From the nature and sudden onset of your symptoms after taking Doxycycline, it is possible that they could be indicative of an allergic reaction
. Since you have stopped the medication and your symptoms are subsiding, you don't have to worry much. It may sometimes take a few days for your symptoms like tiredness
to completely settle down. I would advise you to take plenty of fluids and eat a healthy, nutritious diet. If your symptoms remain persistent or worsen, then I would advise you to see a doctor for further evaluation, since certain conditions like anaemia
or vitamin deficiencies can cause persistent fatigue.
Dr. Sheeba Stephen