Are you taking your probiotics & drinking LOTS of water??? Hehehehe I always ask the basics basics basics....sometimes I lost track of them with all the new meds, docs, & everything else to keep adjusting to. I had the same meds you did and didn't make a connection other than having a full stomach more often than I was used to...
Also, bland diet with oatmeal, rice (basmati brown at least made me feel I was having something a little more luxurious...) and sometimes one of the crackers or breads with a little water late at night (tho I hated to have to get up for bathroom visit, it was whichever seemed most important)
Always keeping something in my stomach seemed to help after a while and I'm the world's biggest baby when it comes to nausea, believe me! I had 19 and 17 hours of labor and delivery with my 2 girls and no medication and I didn't feel I was suffering (though the pains were constant and high level - goes without saying) but in the beginning, the nausea and vomiting made me lose 17 lbs. in 10 days so I had to go to the hospital.

When I got out, my Italian landlady helped me more than "modern" medicine with steady little glasses of wine too (after my 3rd month) ....ROFL But, it really did help. and I don't drink, even now.
I'd just offer trying everything, see what helps or hurts little by little. before I'd resort to medication, unless Flagyl or pepcid, peppermint tabs can do the job. You've got my sympathy! Hard as it is, give each a few days for a true test...