i have recently encountered similar patient with recurrent thrombophlebitis
but in the legs. as you said it is clearly a thrombophlebitis , you need not worry much.but since you are having pain abdomen with bloating
i would suggest you to go forUpper GI Endoscopy
and also ultrasound
scan with color doppler of abdomen to rule out any invovement of blood vessels supplying small and large intestine.if tests are normal please take medications(PPIs and prokinetics) from your doctor. i hope this will help you.have a nice day.