Threelac and missed period..

I have had recurring vanginal yeast infections for the past 4 years. Diflucan and OTC meds help briefly but do not ‘cure’ me of the infections.

2 weeks ago I started on Threelac. I took it one packet a day for two days and then 2 packets a day for about a week.

I take Alesse, and my period should have started on Tuesday of this week, it is now Thursday. On Monday I had mild spotting and that was the extent of my period. No bleeding since Monday. I usually menstruate for 4 days, from Tuesday to Friday.

I have not taken any Threelac since Monday. Do you think the Threelac has caused the lack of menstruation? I am not pregrant!

Any ideas or suggestions.. should I continue the Threelac? Should I start back on the Alesse as scheduled on Sunday?

Thanks in advance.