don’t know when to test right

i dont know if i ovulated this month, i did opks but I guess I missed it since i did 1 per day and one day looked more dark but no positive . I BD those days. I have 2 weeks and 4 days since I tried and thought it was ov day. I did pregnancy test but showed negative. Can i still have hope or was too early to get a test? I have mild cramps sometimes and the second time i feel nauseous in 2 weeks. I fel like vomiting and had cramps one week ago I thought I got my period but I didn’t, and last night i got the same symptoms + i got itchy nipples and got scared i have smth else. When should I get testing again or i’m hoping for nothing ?