Gah! Have written a long version of this but it was incoherent nonsense and bogged down in detail. Am using a pseudonym btw as I'm slightly about being so gung-ho when at my age I really ought to know better.
Anyway, in a nutshell:
Last period started on the 8th of this month. My cycle is about 30 days long, give or take a day or so (bearing in mind that as I'm not TTC I don't monitor dates and whatnot that closely). On Friday night dp and I threw caution to the wind were drunk and had unprotected sex. In my drunken state I thought it?d be safe. I swear we never do this (have unprotected sex that is, not sex itself).
It's pretty unlikely isn't it, that I've conceived? I'm sure I had Mittelschmerz last night, which is what got me thinking but it only dawned on me today (again, ) that actually we may have taken a risk here. I've been through all the ovulation calculator type things on t'Internet, including here on Mumnset but they all vary a little. What's the MN-ers expert verdict (on the likelihood, not my fecklessness)?