i spend too much money on pregnancy test?

[hello every one]

i have been married for tow years.my husband and me decided not to have children for the first year.it was very relaxing and peaceful time.after a year we started to try for a baby.tow month later i got pregnant but unfortunately i miss carried at 7 weeks.again tow month later i got pregnant but i lost my baby at 29 weeks.and now after 4 months from loosing my baby we are back to try again,but my main problem is that since we started to try for a baby the first time i spend too much money on pregnancy test.as i am so keen to have a baby i Start to test as early between 4 and 6 days from the day my period is expected,i test about three times in the same month and i keep buying the very expensive digital pregnancy test.every month i say to my self i will not test again unless i miss my period for at least a week.but this is never happened,as i go and bye another tests.my husband does not know about all that as he has advised me before for not to test too early.as every time i test negative it made me very sad.what shall i do to stop my addiction for pregnancy test.please help me.