I ovulated on a Thursday. I had TI the Monday, Tuesday and Wednesday prior and then the Friday (late) after.
Plain Mucinex is an expectorant. It thins your mucous and makes it more favorable for the sperm to swim up. Mucinex is the same as Robitusson; they are both guaifenisin. If you take this take it in the days leading up to ovulation and then stop. Be sure to only take the PLAIN versions of these brands; if they have any letters following the name, it's the wrong formula and can actually be counterproductive.
P4 is the lab reference for progesterone. So when we say P4 support we mean any progesterone support. P4 support comes in several forms.
Endometrin - vaginal tablets
Crinone - vaginal gel/cream
Suppositories - vaginal
Progesterone in oil - injected intramuscularly
Prometrium - oral capsule; can sometimes be used vaginally