Sudden tightness of foreskin. Its own?

I had an infection on my glans penis 10 days back. It caused white patches and tiny spots that resembled pustules. There was little bit discomfort but other than that no other problem. I took amoxicillin 500 mg capsules for 5 days twice a day due to which the condition resolved. But along with that my foreskin became tight. Whenever I try to retract my foreskin for cleaning my genitals, it hurts, and there are small lacerations on the top of my foreskin that get irritated whenever I pull back my foreskin. The tip of my foreskin has also become red. There is no other problem. No irritation or burning sensation during urination or otherwise. Please suggest what should I do. The lacerations are not healing as I try to retract my foreskin daily during bath for cleaning. Is it a serious situation or will it resolve on its own?