My urine and blood test came back negative and \ but no period in 3 1/2 months and feeling flutters and ligament pain ?

See a Provider: If blood and urine pregnancy tests are negative. Your symptoms are not caused by a pregnancy. Please see a provider to have an exam and ultrasound to check your ovaries!

Ammenorhea: If you had a normal cycle in the past and now it has stopped, without you being pregnant-than you have secondary ammenorhea, which needs to evaluated and diagnosed so that the proper cure/treatment can occur. Best wishes.