hi..thanks for your query.
From what you have described' bumps are opened they ooze a clear yellow liquid',it looks like there is a superimposed seconday bacterial infection on what could have been an allergic rash
.If you want to use an OTC now,you can try using topical Mupirocin
cream twice a daily for a few days to see if that improves.Alongwith ,oral anti histaminics will help combat the symptom of itching( hence you not scratching to cause an infection) and calm down the allergy
cells in the body.
Ideally Oral antibiotics
and topical steroid
creams of appropriate strength should help you achieve a long term cure.