Was you bleeding after sex? If it was, then maybe you can attribute it to that. Are you having any mucus? If you're not having any mucus and you recently had sex, then you could be okay. But if you're having mucus, if I were you, I'd assume LAM is no longer an option.
If you want to be cautious, observe for mucus. If you observe any consider yourself fertile. If your mucus dries us for 4 days, you're back to phase 1, but once mucus appears, you're back to phase 2. This can continue on and on for months until your body gears up to finally ovulate.
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