Usual Adult Dose for Pain
Oral:
300 to 650 mg orally every 4 to 6 hours as needed
Maximum dose: 4 g in 24 hours
So there are 1000mg in a g.
Which means you can take at max 8000mg in a 2 day time span.
Youve taken 90 tabs of 75mg and thats 6750mg, so you'll be okay.