Could The Nausea And Loss Of Appetite Be Due To Stopping Susten And When Can I Expect My Period?

Hello sir/mam I took a follicular scan on 8th day of my cycle.my dominant follicle was 16mm.Et was 5cm.i was prescribed susten 200 mg BD for 14 days, course got completed by yesterday night.I am feeling loss of appetite and nauseous on and off from today morning.kindly give your opinion.is it because of stopping susten ..when can I expect periods..or how long should I wait for checking upt? thank you in advance