Hi.. I hav been in ttc for 3 months and I had a miscaariage last year. usually my cycle lenght is >40. I started charting my bbt from this month and i found tat i ovulated on cd 29 and i tested for pregnancy on 15dpo but it turned out to be negative. N my bbt has been gradually falling down and its 17dpo still i din get my periods. Its almost 45 days and no sign of AF. KIndly help me out. Is der something to worry abt ?