I recently started a new diet and fitness regimen and I think it did a number on my cycle. I had been having mostly 28/29 day cycles since I stopped breastfeeding in June, but this time it was 33. I mostly ate healthy and exercised occasionally before I started my new diet. The biggest change was I did a 10 day alcohol-free period (which happened to be during my follicular phase if that matters) and have generally been consuming less since. I'm tracking calories and aiming for a 250 deficit and have last 1.5 lbs since starting. So it isn't a huge change. I'm wondering if my cycle is likely to continue to be long while I'm dieting/exercising or if it'll go back to 28/29. I'm trying to figure this out because my husband wants to plan a ski trip with his friends this winter when we'll be starting to TTC and I want to estimate generally when my fertile windows will be so he can avoid those dates. And they vary widely depending on the length of the next few cycles. Oh, and if it matters - on my 28/29 day cycles I would O on CD 16 or 17 with a 12-13 day luteal phase. This cycle I Oed on CD 19 with a 14 day luteal phase - so both parts were longer.
So, do you think I should assume I'll go back to 28/29 or stay longer? Any similar experience?
clementine / 873 posts
Hmm, that is interesting. I have heard that changes to your diet can have an impact, but never actually heard of someone experiencing a change when they were already regular. Have you done any temping so you can compare to your regular cycles? My guess is that you won't really know for sure until your next cycle is 33 days or not. If you've been temping, you can kind of cheat and see if things are delayed before your next period.
nectarine / 2458 posts
@codeitall: Thanks for responding. I do temp (for now to avoid but also to see what my cycles are doing in prep for ttc) so I am curious to see when I ovulate next time. I did find this article which says that in general women who exercise and abstain from alcohol have longer cycles. And I saw somewhere else that both of those things reduce estrogen, so I wonder if that's what happened. Based on that I think it maybe likely to stay longer. Maybe not 33 days but maybe somewhere in between.
grapefruit / 4361 posts
Honestly feel like it would be too impossible to predict
apricot / 444 posts
I think it would probably be really hard to predict. Are you worried about the cycle being longer? Or just that it's harder to predict your fertile window?
My cycles have always been really long (33-40 days). They typically don't jump drastically from one end to the other, but overtime go back and forth. I can't remember how long my cycle was when we were TTC (I want to say roughly 35days?) but we got pregnant on the first try. I hope long cycles aren't an issue for conceiving! We'd love to have more in the future.
nectarine / 2458 posts
@annem1990: I wasn't worried about it being long. I don't think that would hurt chances of conceiving - at least I really hope not. I just wanted to give my husband a good week to plan his trip and was going to pick the week I thought I'd be end of cycle/about to have my period. But if my cycle is 4-5 days longer times 2-3 months, it completely flip flops the weeks I'd be fertile.