Anyone else having a hard time with SSRI's????

Hey guys! So, I'm back to attempting to shed this fat suit I put back on..lol and I've recently been put on WellbutrinSR and Buspar for anxiety and depression, and I have to say, this weight does not seem to want to budge! I didn't even get a big week 1 weightloss like usual Anyone else having issues with antidepressants and weightloss? Or anyone having good success with weightloss while on medications like these?
Lauren