4th round still no BFP!

Rebecca • TTC #2 for 2yrs with pcos. Tried Clomid/metformin & injectables. First child born 14yrs ago. Failed IVM. Ivf worked!
Not having any luck. Been on Clomid 50mg 4rounds. Ob/gyn said I can take Clomid for a year. I seem to be ovulating on 50mg. But if nothing has happened do I continue taking Clomid, or increase my dose, or try something else? Having a laparoscopy in March.