I got exposed to my ocd today. To do?

Hlo! I am suffering from ocd... fear of tovhing anything which has dirt and oil.. Today I changed my bed- covering it wid new bed sheet but then I realised it must have been contaminated with germs as it was washed by the maid weeks ago n she must have kept it inside the almirah with dirty hands.. I avoid touching anything which my maid touches..After hit with this realisation my ocd has got triggered badly. I am feeling uneasy, nausea,,, my throat has become dry n choked.. I am feeling very down n upset I feel like I have ruined all the efforts I have been doing since months to avoid ocd exposure I am regretting it badly as I shud have washed it again.. Plz tell me what to do? As my health is getting worse wid every minute. I may end up harming myself