hi i have been trying to concive for about 18mths now without any luck. i have missed 2 periods but the 3 home tests i have done have all come up negative. what advise can you give me and could i be pregnant even though these tests have shown negative?
Chances are less that you are pregnant as 3 UPT tests are negative.  Go for blood tests like thyroid profile and FSH and LH.  Serum prolactin.  Usg to rule out PCs.