Bump on roof of mouth. Swallowing it.

I had ulcer on the roof of mouth on the right which healed in 1 day. After 2 days I had ulcer on the left side of upper mouth near soft palate where upper jaw ends. It happened 3days back on 14th april. It was initially painful and I started taking becasole capsuel. The pain was gone next day and size also decreased. It has not comoletely gone and is now like a small bump which could be felt when I move my tongue. I have pain while swallowing and mild pain and resonance in sinus when I speak. No cough or fever. I have taken azithral for 4 days and montex fx. Please suggest how long can bump take to heal. I only take eltroxin 50 and livosiz 5mg due to ongoing medical conditions. It pains when I try to clear nose muscus by moving to throat and swallowing it.