quick question about ovulation tests

[maximum74]

TTc number 2 and after 18 months of trying have just done all 7 clearblue digital ovulation tests starting on day 11 after last period. Have quite a regular cycle, between 27 -29 days, but all tests have come up negative. Could i be ovulating earlier or later, what are the chances and should I continue to shell out for more tests this month or start early next time??
saw the Dr earlier this year and took blood tests which said i was ov. have been diagnosed with coeliac. Could this affect?? Lots of questions but if anyone can help. VV grateful

At 18 months of ttc without success there is likely to be a problem with either one or both of you preventing conception.
I would return to your GP and ask to be referred to a subfertility unit as a matter of course. Don't be fobbed off!!.

Any test done over six months ago should be discounted. You need up to date test results and your man should be tested also alongside your own tests to see if there are any male factor problems. The subfertility unit should be able to tell you whether coeliac has any bearing on ttc.

You are well beyond the stage of using OPK's and I would stop using them forthwith. They're not helping.

Coeliac diesease does have an effect on ttc, I don't know how though. (A friend has it and I know she may not be able to have children because of it)

Nomoremagnolia. Thats very interesting as the dr said that childbirth can be a trigger for coeliac which may go some way to explaining why we had no trouble conceiving DS, but are struggling this time. It did affect my periods so taht could be a cause and may be also for your friend.