I have a mild penicillin alergy (rash response) and it definitely doesn't mean you have to just suck it up, there are alternatives! It is just something you will have to make your doctor aware of when they are prescribing things for you; people around you should also be made aware (parents, siblings, partner etc) so if you ever need something and don't have the ability to let them know, somebody else will be able to for you.