nauseous

I have a question. So I woke up today feeling fine. Took my meds like normal and ate 1/2 a bowl of oatmeal (which I have eaten plenty of times before). Went out for a while and then out of nowhere, I have this terrible stomach ache. It is like I'm nauseous but I know I'm not going to throw up. My stomach kind of hurts in a weird way. I was sleeved 1/9 and this has never happened before. I'm afraid to try and eat because I don't want to make it worse.

Has this happened to anyone before? I would value people's opinions on whether I should try and eat or wait it out. I still have nausea medicine that my doctor gave me for after my surgery. I haven't taken it since like the 2nd day I was home. Maybe I should take one of those?

Thanks in advance