I have about 25 bug or mosquito bites. Can that lead to any allergic reactions? I feel like o have sleep apnea

Yes. Bug bites can definitely lead to allergic responses. If you are writing this question then we can logically assume that you didn't die from an allergic reaction, so don't sweat it. Sleep apnea has nothing to do with bug bites. It is an interruption of air flow during sleeping.