Post sinus problems?

I need help I had fess and a sphnoidotpny and balloon sinusplasty 4.5 weeks ago! I have an infection now as my head is pulsating I have awful headaches all day and night and fatigue and exhausted all the time I have lost my smell and taste too. I have been doing sinus washouts for the last two weeks . I haven't been able to go back to work as yet as feel so awful. I have no temperature please help.... is that normal

No doctor answers yet