Hi Anonymous and thanks for your question.
It's very possible that you have a mosquito bite. They show up as an itchy round, red, or pink skin bump.Bed bug bites show up as a raised, red skin bump or welt that is extremely itchy and inflamed.
Bed bugs don't usually travel alone, so if you had a bed bug infestation you would likely have more bites. Please see Bed Bug FAQs for more information.
One thing you might try is a Google search for photos of bug bites and then comparing your bite against those images. If you do, and that tells you what you have, will you let us know?